Improbable Age - TV Tropes

Aren't you a little young to be a doctor?

"So let me recap: Amy is evidently a millionaire, dresses up in a fancy dinner dress, she's a globetrotter, high school drop out, ex-terrorist, highly ranked military official, ghost hunter, a potential gold medal winner in 3 different Olympics of at least 4 disciples each... and not one parent or child service agent in sight. Look at this list. Is there ONE part of Amy's character that makes you point and go, 'Yup! That's a 12-year-old girl alright!'?"

— Luke the Fox, Sonic Dissected Episode 6

A character whose age seems inappropriate with their occupation or position given the amount of experience they would need, whether or not their age is actually important within the storyline. Tends to lean to the younger side, resulting in the Teen Genius, Kid Hero. Sometimes, a disproportionate amount of the (especially female) cast is inexplicably under thirty. In benign cases, it's because the writers assume the audience better identifies with characters their own age.

In some cases, an age that is improbable at first glance may actually be Truth in Television. In ages past, life expectancy was shorter and people needed to be capable at a younger age; in fact, studies seem to indicate that the concept of there being an intermediate but still immature phase between childhood and adulthood is a modern creation. This has produced a very curious effect where the longer humans live, the longer the age gap of competence tends to widen. It also must be noted that many of the examples below occur in violent settings; people growing up in a warlike environment have no choice but to adapt and learn to survive, the faster the better. It's also a common problem in both real and fictional societies with inherited positions of authority, although usually some adult regent would be appointed until the heir comes of age.

Although in the past, competence, skills, and abilities were more necessary at a younger age (as opposed to the modern convention of serious training starting only at age 18 or so), this convention is often abused for fields where expertise is implausible without years of formal training at a more mature level — for example, a teen already being an expert in modern disciplines that require formal university education as well as graduate level education. There is only so much a kid could learn from his local library. This is often the result of casting actors in their twenties playing full professors when in reality most people are at least 25 when they first get a PhD.

More rarely this trope works at the opposite end of the scale with characters seemingly inexplicably old for their positions, often as a function of being played by a 'name' actor whose recognition or prestige factor outweighs other concerns. This can be especially obvious in fields that require extensive physical fitness; in real life relatively few frontline soldiers or beat cops will be of retirement age.

For characters whose age seems inappropriate given their maturity (rather than competence), see Wise Beyond Their Years. If the people running a society are improbably young, see Teenage Wasteland, though if only one is, it's A Child Shall Lead Them. If the character is of an appropriate age but the actor is too young, it's Underage Casting. Can be easily handwaved by making a character Older Than They Look, or even Really 700 Years Old. May lead to Child Soldiers, and is one possible reason why someone can be an Overranked Soldier. Contrast Competence Zone.

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Advertising

This internet ad for the anti-socialist book series The Tuttle Twins has a preteen boy (who goes by the name of "Vlad") reading the works of Karl Marx, which implies a very high reading level for someone so young.

Comic Books

Batman
- Damian Wayne has an extremely varied skillset and a keen intellect unheard of for most boys his age, being skilled enough in numerous sciences to earn him doctorates, learning to drive at the age of five, writing emails to newspaper editors at two, and demolishing entire squads of trained ninja with ease. This is not even taking into account the fact that he can disarm atomic bombs, design his own optical filters, and hack the security systems of major companies like Lexcorp (whose president has a twelfth-level intellect) with a bored yawn. In Super Sons #10 he claims to have learned seven languages and written five doctorate-level theses by the time his baby teeth were finished growing in. This is also deconstructed, as he sacrificed his social skills for this training and often skimps out on daily tasks that his father expects him to do simply because he feels he doesn't need to (i.e. homework from Alfred). His precociousness may also be due to the experiments performed on him by Talia during his development.
- Harvey Dent is usually depicted as a contemporary of Bruce Wayne and having been Gotham's D.A. during Batman's early years before becoming Two-Face. Given Bruce starts his career as Batman at 25-26 years old and Harvey has been established as a childhood friend of his, unless he managed to graduate early, Harvey was just barely out of law school when he was elected as District Attorney. It's downplayed given Harvey was once The Ace in a city with a legal system as corrupt and ineffectual as Gotham
- Harley Quinn had her original occupation changed from a psychologist to having been a psychiatrist. The latter job requires years of medical school. Despite this, Harley doesn't seem much older than her mid-20s. While it is possible to graduate by that age, it's difficult and that doesn't match Harley's character. Other writers have tried to explain this away by having her seduce her professors for good grades, but again that doesn't fly since a career in psychiatry requires rigorous demonstrations of mental and emotional maturity as well as raw intelligence. Then again, she was working at Arkham Asylum, a place well known for its incompetence and low standards.
Lampshaded by a comic strip for Ben 10: Alien Force, which opens with Ben and friends taking down a supervillain who turns out to be a seven year-old girl (with all the emotional maturity that entails), causing Gwen to remark “Society’s turning out the supervillains younger and younger”.
Hunter Rose of Grendel, who is depicted as near super-humanly gifted. World-class fencer in his early youth. Becomes a best selling novelist and socialite while at the same time the crime lord Grendel, and later the adoptive father of the daughter of one of his victims, all before the age of eighteen.
Hit-Girl from Kick-Ass is an 11-year-old badass with Charles Atlas Superpowers? If it wasn't so awesome it would have really stretched the Willing Suspension of Disbelief.
Derek Dynamo from Super Dinosaur fits this to a 'T'. No more than 13 yet he does battle with powerful Dino Men.
Teenage Mutant Ninja Turtles. Though it can justified that as Uplifted Animals (the mutation made them antropomorphic) they're not exactly human.
Tintin can fly planes, drive tanks, operate weaponry, navigate harsh terrain, carve a working trumpet out of a tree branch with a pen-knife, build cars out of discarded spare parts, learn elephant language in a matter of weeks, etc.
The Comedian in Alan Moore's Watchmen apparently joined the Minutemen at age 16, having already established a reputation as being particularly brutal and vicious while acting as a vigilante in the city's waterfront area. Clearly a precocious little scamp.
- Before Watchmen also applies this to Ozymandias, who was apparently already a successful businessman with his own corporate building before he hit 20. Since this one wasn't written by Moore, however, its canonicity is debatable; Watchmen proper only indicates that he was active as a superhero by 19, which is more plausible.

Fan Works

Defied in All-American Girl (Shinzakura). When a number of human soldiers are conducting an interrogation of armed terrorists, Princess Celestia transforms herself into a human female soldier to secretly participate in the interrogation. The other soldiers point out that her human form is a little too young for her chosen rank (Lieutenant Commander) and advise her to transmogrify her uniform into that of an Ensign.
American in America: Alfred F. Jones is the personification of America and is accordingly around four hundred years old, but looks and acts nineteen. This gets him into trouble with the TSA, who don't believe that he personally knows government officials, can afford two apartments without parents, or is an Air Force General with a classified service record. England, who appears in his early twenties, is in a similar position.
Exactly how old is [Arthur Kirkland]?
This year? He turns twenty-three.
And yet he has, presumably, a private jet and the cell number of our Secretary of Defence.
Arcanum: Pyrrha set a record for being the youngest initiate to get their first gem and become a full Arcanist. Ruby quickly takes that record from her (though obviously she has special circumstances), but concurrently Pyrrha succeeds at the same test and becomes the youngest to ever earn their second gem and leave initiation completely.
A milder, lampshaded example in Bait and Switch: Captain Kanril Eleya is well aware that at 29 years old she's very young to be commanding a Galaxy-class starship. She puts it down at least in part to bloody wars and sickly seasons: as the fic is set in the Star Trek Online time period, Starfleet is having to replace a lot of combat losses and anyone who shows even slightly above-average promise is getting to skip a grade or two. It also helps that she's been in the military since she was seventeen, albeit originally as an enlisted crewman in the Bajoran Militia.
In Boys do Tankary?, in the flashbacks, characters who are even younger than the teenage protagonists of Girls und Panzer are shown crewing and commanding tanks, this time in actual war, rather than tankery matches. In particular, Vincent joins the army at the age of six, and he and Gage become leaders of their own platoons at the age of seven. Disturbingly enough, the horrific implications of this are never explicitly commented on. In a less extreme example, Iris, "the Captain" is only eighteen.
Marissa Picard: The title character was captain at age 9.
While most of the characters in Mirai SMP fall into "hard to believe they're teenagers", a couple stand out in particular:
- Joko, despite being 18, is a police officer for the FBI.
- Sneeg is a professional gambler despite only being 17 years old.
The point of the Oreimo fanfic My Life Can't Lose Its Normality is to make the main character of the series, Kousaka Kyousuke, cooler than he is in canon. It goes about this by having him and several other characters be part of a team of vigilantes who are just as badass as most special operatives, if not more. They're in high school.
In Neither a Bird nor a Plane, it's Deku!, Alexis Lois "Lexi" Luthor graduated from Metropolis University at the age of five and earned a doctorate in nanoengineering at seven. She's surprised at how easy it was for her to get into U.A.'s Support course and declares that she could have easily finished it when she was three.
Oni Ga Shiku Series: Izuku starts acting as a vigilante at age eight to keep up with his training when his uncle is not around (and because he enjoys it). One of the people he rescues is gobsmacked to hear how old he is. He kicks the crap out of the entire Yamikumo-gumi when he is only ten years old. That said, the entire sequence of events that lead to that (and the event itself) leave him with serious mental trauma. He starts working as a part-time employee at Sky Financec immediately afterwards, even though in the real world that's illegal. Eventually, Akiyama puts a stop to all that because he wants Izuku's high-school years to be as normal as possible so he can enjoy them before he inevitably throws himself in the grinder again.
Operation ECLIPSE (Lermis): Vilmis is very disturbed that Tails has authority in a major organization at only ten years old, especially after it sinks in to him that Tails rescued him from the crashed spaceship alone. It gets to the point that he demands to know if Tails' parents know what he's doing (not knowing he's an orphan).
In Sonic and Donna, Donna works at a waitress at thirteen.
In Time Gate X, a science fiction The Land Before Time fan fiction, one of the main characters, Tanner Colvin, is a military scientist who is 14 to 15 years old.
In the legendary satirical fanfic A Trekkie's Tale, the heroine Mary Sue is fifteen and a half years old and a Starfleet lieutenant.
In Unstable Equilibrium, Asami took over her deceased father's business at any only fifteen.
Harry (and by extension, the rest of the student characters) in A Very Potter Musical claims to be "just a 12-year-old kid," despite the rather mature romantic subplots and advanced spellwork present in the musical. This is played for humor.

Films — Animation

Atlantis: The Lost Empire has the teenage Audrey as the ship's engineer. Milo even lampshades how someone of her age ended up on their expedition. Turns out she was that much of a Child Prodigy. Given that Rourke was recruiting people who would be expected to steal the Heart of Atlantis, it's likely he wanted someone young and easier to manipulate.
Similar to Ginga Nagareboshi Gin's "puppy as pack leader" complex, Balto II: Wolf Quest, the first of the two Balto sequels, took this to the next level. Not only was Aleu leading an entire wolf pack when she was barely more than a year old, she was only a quarter wolf, and the rest was dog. Not to mention it's highly unlikely that some outsider can just show up and suddenly become Alpha (especially as 'Alphas' are just the parents of the pack). But of course the only justification for this is that cartoon animals are typically more civilized and accepting than the real thing.
Batman: Mystery of the Batwoman: Dr. Roxanne "Rocky" Ballantine is this. According to the stats on the Batcomputer, she is 20 years old during the events of the film. She has a doctorate at an age where most people are only halfway towards getting their four-year degrees (for the record, most people don't get their doctorates until their mid-to-late twenties at the absolute youngest). The best explanation is that she was some kind of Child Prodigy who started college early, though it could also be an animation/translation error, since Kathy Duquesne's surname is misspelled on the same screen.
Valentina Ortiz from Inside Out 2 made the Fire Hawks hockey team when she was a freshman despite this being more for older kids. In present day, she's captain.

Films — Live-Action

American Hustle has Jennifer Lawrence as a depressed housewife with an 8-year-old son. Rosalyn's real life counterpart was in her 40s when the ABSCAM took place, while Jennifer was 23. She's implied to have been something of a trophy wife but it still raises eyebrows.
Batman Forever: While Dr Chase Meridian's age isn't stated, she looks to be in her twenties (Nicole Kidman was 27 when she made the film). Considering it takes around ten to twelve years to become a clinical psychologist (especially taking into account Chase holds a doctorate), she comes off as implausibly young to have not only qualified as a psychologist but to be so established in her field the Gotham Police Department brought her in as a consultant. Originally Rene Russo was cast as Chase; Russo was in her late thirties when the film went into production but was replaced due to being considered "too old" to be Val Kilmer's love interest (even though he's only a few years younger and was in his mid-thirties at the time). According to Nicole Kidman, when she questioned why a psychologist would wear the outfits she's put in, Joel Schumacher said "Nicole, this is a comic book, it's heightened reality", so the improbability was the goal from the beginning.
Black Narcissus deconstructs this. Sister Clodagh is put in charge of the new convent. If she's the same age as her actress Deborah Kerr — she's twenty-five. Numerous other characters react with surprise that such a young nun is the Sister Superior, and Clodagh soon loses control of everything. Although it's more to do with the environment than her age, it's likely that an older and more responsible nun would have been able to keep things running.
The Radio Rock DJs in The Boat That Rocked are on average rather older than most of their real-life Sixties counterparts. Bob in particular is pushing it, but even The Count and Gavin are at least ten years older than they should be.
The Bourne Series:
- Nicky Parsons (Julia Stiles) is one of Jason Bourne's field handlers on an extremely sensitive mission and apparently has beyond Top Secret clearance given what she is involved in (monitoring all of the Treadstone field agents). In other words, significantly more dangerous to the Agency than Bourne is if she screws up, or if something was missed in her vetting and she is less than 100% loyal. When The Bourne Identity was filmed, Julia Stiles was a very young looking twenty-one. There's an attempted Hand Wave in The Bourne Supremacy when Nicky explains her cover was an exchange student studying in Paris.
- In Jason Bourne, unless Heather Lee (Alicia Vikander) is older than she is, the audience is being forced to believe that a 27-year-old could have a high-ranking position in the CIA. Her demands at the end of the film to be put in an even higher ranked position highlight this.
A criticism of A Bridge Too Far was that Ryan O'Neal, at thirty-five, was too young to be believable as an Army General. It's actually a case of Reality Is Unrealistic because his real-life counterpart, James Gavin, was the same age and was the youngest general commanding a division during World War II.
The Dark Knight Trilogy
- 28-year-old Cillian Murphy plays Jonathan Crane, who holds a doctorate in psychopharmacology and is the chief administrator of Arkham Asylum.
Darling Lili has the improbably old example. Bill Larrabee is an Ace Pilot in his prime, played by the mid-40s Rock Hudson.
Flashdance: Many reviewers found it highly implausible that an 18-year-old girl would be allowed to work full-time as a welder. This was another thing pointed out by MAD!
In The Ghost Writer, 56-year-old Pierce Brosnan plays a former prime minister. 41-year-old Olivia Williams, looking younger than that, plays his wife. We could assume that the character married a significantly younger woman, if it weren't specifically stated in the story that they went to college together. Neither is exactly an improbable age for the role, but they're definitely not believable as contemporaries. Tilda Swinton, seven years younger than Brosnan, was originally cast and would have been more believable as being within a few years of his age.
Greta Garbo felt she was too old at twenty-seven to play a prima ballerina in Grand Hotel.
Lampshaded in In the Loop. The British bureaucrats comment that American White House staffers all look way too young for their level of authority. One Brit comments, "It's like Bugsy Malone but with real guns." In another scene, Malcolm Tucker is horrified to realize that the government agent he'd been scheduled to meet barely looks out of his teens. He storms out, saying, "No offense, son, but you look like you should still be at school with your head down a fucking toilet."
James Bond:
- The third James Bond, Roger Moore, fell into this trope, especially in the later films. It was somewhat disconcerting seeing him, at age 58 performing an Unnecessary Combat Roll here and there in A View to a Kill, which gave him the label "Geezer Bond" in an Esquire article.
- The World Is Not Enough has Denise Richards playing Christmas Jones, a nuclear physicist leading a major project — at the ripe old age of 28. Not only is that barely old enough to have finished a PhD to begin with, let alone be made a project lead at a nucear facility, but Richards often looks and sounds even younger than that; in two concurrent films, Wild Things and Drop Dead Gorgeous (1999), she'd convincingly played a teenager.
- In Die Another Day, Rosamund Pike was 23, playing an MI6 operative with a high enough clearance level to successfully sell out Bond to the North Koreans. More impressively, she did this part-time while competing as an Olympic fencer.
- In Casino Royale (2006), Eva Green was 26 when she played Vesper Lynd, a high-ranking British Treasury agent, with her gravestone in No Time to Die revealing that she was born in 1983, meaning that Vesper was 23 years old in Casino Royale.
Joy (2015) is loosely based on the life of Joy Mangano who didn't start inventing until she was 30 and spent about four years getting her designs sold. Her actress Jennifer Lawrence was 25, making it rather surprising to see her as a divorcee with two children.
Last Action Hero, where most of the action occurs inside a fictional action-adventure movie, naturally lampshades this when Danny Madigan, a young boy who gets partnered with mature police officer Jack Slater, uses the fact that he is too young for this post to try persuading Slater that they are inside a movie.
The title character in The Librarian movies managed to earn 22 academic degrees (including 4 Ph.D.'s) by the age of 31. In the second film, he meets a female archaeologist about his age who holds 27 degrees.
Lampshaded in Miss Congeniality. Gracie is chosen to go undercover as a contestant in the Miss America pageant, where the age limit is 18-27, and she points out that she's over 30 (Sandra Bullock was actually 36 when the film was made). Several of the other actresses playing contestants were also in their thirties, such as Heather Burns, Melissa De Sousa, Deirdre Quinn and Wendy Raquel Robinson.
Henry Fonda was 49 during the filming of Mister Roberts which quite old for the character's rank Naval Lieutenant Junior Grade, even in wartime. As a note, Fonda's colleague and friend, James Stewart was considered old for pilot training in the actual war at the age of 33 and had to fight tooth and nail to be assigned combat duty.
The Mummy (1999) has an 'improbably old' version. Capt. Winston Havelock is a retired Ace Pilot from the First World War. However the first film is set in 1926, less than a decade after that war ended and Capt. Winston is visibly over sixty (his actor Bernard Fox was seventy one at time of filming.) Even assuming he joined the Royal Flying Corps at the outbreak of war in 1914 he'd still have been deep into middle age during his combat career.
The Omen (1976): Gregory Peck was 59 years old during filming, which is way too old for a newly appointed ambassador with a prepubescent child (at that age, most diplomats are nearing retirement). For reference, most of the other actors considered to play Robert Thorne were in their 40s, a far more appropriate age for such a character.
Robert De Niro and Al Pacino in Righteous Kill, which was by most accounts only noteworthy as it was the first movie since Heat to star both actors, and the only one to have them both in more than one scene together. They played Homicide detectives at age 65 and 68 respectively. Not a particularly egregious use of the trope, but it seems more likely that anyone pushing 70 in the NYPD would have at most a desk job and not be pursuing drug dealers and serial killers.
RoboCop 2: Cain has a pubescent boy in his gang who is treated as an equal member of the crew. Once Cain is captured, the kid actually seizes control of the gang, becoming the biggest ganglord of the city.
Silver Linings Playbook: Tiffany has already been married for several years and been in and out of the mental hospital. Her book counterpart was in her thirties, and Bradley Cooper (at 37) plays her love interest. Her actress Jennifer Lawrence was 21 at the time. The part was originally for Anne Hathaway, who was 28 at the time, making it slightly more believable.
Spy Kids: Carla Gugino looks old enough to be the parent of two pre-teen children, but not old enough to have spent several years as one of the world's top spies before retiring to have them.
Star Trek: Pavel Chekov, the chief navigator aboard the Federation's flagship is seventeen (his actor was 18). He's also apparently an expert in advanced theoretical physics. By the end of the film, Kirk is made Captain at twenty-five (his actor was 27). In comparison, his counterpart was the youngest captain in Starfleet at thirty-one. Quickly deconstructed in Star Trek Into Darkness: Kirk's arrogance and inexperience led to him making a series of bad calls, culminating in a serious Prime Directive violation for which Starfleet relieves him of command.
Star Wars:
- The Phantom Menace: Word of God says Queen Amidala was 14 during the events of the film. In the sequel, she's a Galactic Senator at 24 and seems to pass down the trait to her daughter, who held the same position at 19. According to Darth Plagueis, the reason for her early success was because Palpatine and his master arranged the whole thing as they knew a young teen would be easier to manipulate (which makes her reign even more impressive as Naboo was an elective monarchy). Anakin and Luke would be examples if they they weren't The Chosen One and his son respectively.
- In Anakin's case, he was one of the youngest Jedi to ever receive the rank of Knight. This is justified, however, as the Jedi's numbers were rapidly diminishing due to the Clone Wars, causing them to promote Anakin earlier than they otherwise would have due to his great skill and status as The Chosen One. The fact that he wasn't emotionally ready to be severed from his mentor also likely played a part in his eventual corruption. Anakin's Teen Genius apprentice Ahsoka would've beaten his record had she not been pushed out of The Order by the Council.
- In Revenge of the Sith, when Anakin is mad about the Council refusing to promote him to the rank of Master, Obi-Wan points out that he's still by far the youngest Jedi to ever be on the Jedi Council in any way but this does little to assuage his Inferiority Superiority Complex.
- In The Force Awakens, General Hux is in his early 30s, but is among the most prominent leaders in The First Order. This is justified by the First Order being a military dictatorship where his father was a high-ranking Imperial officer, and it's strongly implied that he climbed to the top rather ruthlessly. Unlike many examples of it, General Hux does try to live up to the responsibility of the station. Plus the First Order needed lots of new blood after the Empire collapsed, as shown with Kylo Ren, who's around the same age as him.
Realistically, Rick Flag would have to be in his 40s to be a Colonel, and given Harley Quinn was a psychiatrist and the Enchantress's host, June Moone, has a PhD, both would be in their 30s. In Suicide Squad (2016), Flag, Harley, and Moone are respectively played by (at the time of filming) 36-year-old Joel Kinnaman, 25-year-old Margot Robbie, and 23-year-old Cara Delevingne. Documents in the film show that Harley was born in 1990 and working with the Joker in 2009, meaning she was an active psychiatrist at only 18.
In Superman Returns, 23-year-old Kate Bosworth plays Lois Lane, who already has a Pulitzer and over five years of tenure at the Daily Planet (Superman/Clark was away from Earth for five years, and when he first started working there, Lois was a veteran, so the number is certainly closer to ten years), in addition to a kid. In contrast, Margot Kidder was 30 when she first played Lois Lane.
Wall Street: Money Never Sleeps: Jake looks to be no older than 25 — Shia Le Beouf was 23 the year the film released. Yet at such a young age Jake is a top proprietary trader at one of the biggest investment banks in the world and is able to push for a $50 million investment for Keller Zabel into a fusion research company. In real life it would take twenty years at minimum to get to this level of influence and money in investment banking. It's somewhat handwaved by Jake being the protégé and surrogate son of Louis Zabel but it's still way too much of a stretch.

Gamebooks

In one of the Lone Wolf Newsletters, Joe Dever provided a list of Kai and Magnakai ranks and the average ages the Kai Lords reached them. A raw recruit entered at the age of 7, made Initiate (the rank Lone Wolf has at the beginning of his first adventure) at 16, and completed his training and became a Master at 28. The Grand Master, at the time the highest rank, was anywhere from 56 to 60. Of course, that was the old Order; Lone Wolf would radically shake things up, becoming an Initiate at 15, making Master before 18, and reaching Grand Master at the shockingly young age of 35 (even more shocking when you consider that due to his time in the Daziarn, physically he was just a lick over 23). And even that pales in comparison to his successor in the New Grand Master books, who reached the rank of Grand Master at 14. Although to be totally fair, those previous Grand Masters rose through the ranks by training under other Kai; Lone Wolf did it by finding magic gems invested with the lore of the higher Kai teachings shaped by the hand of Crystal Dragon Jesus.

Literature

Over the course of the self-published German sci-fi adventure novel The Adventures of Stefón Rudel, the Author Avatar Stefan enrolls in the "Mars Centauri", picks up numerous military ranks both on Earth and in space, and falls in love with several girls - all while only six years old.
Baccano!:
- Firo Prochainezo becomes an executive member of a Camorra organization at the age of eighteen. While this may not be as impressive as some of the examples above, it's enough for another character to immediately disbelieve it and then subsequently accuse him of sleeping his way up the ranks.
- Meanwhile, Firo's old friend Luck Gandor was acting as an executive of the Gandor family business at fifteen, if not younger. Luck didn't get the position because he was spectacularly gifted, but because he's the son of a Mafia boss and (along with his two older brothers) inherited the turf when his father died — and he's very aware of it. A good deal of his ruthless Magnificent Bastard persona is a front that he puts up in fear of not being taken seriously in his position (and thus targeted).
The Bartimaeus Trilogy:
- Nathaniel is barely 14 when he is put in charge of the Internal Affairs division of the British government, and is held single-handedly responsible for matters of national security. He also buys himself a luxurious townhouse at the same age, and lives on his own.
- In the same series, Kitty is a part of the resistance against the magical government from the age of 13 onwards. At the same age, she appears as the plaintiff in a court case by herself, with her parents explicitly refusing to have anything to do with the case. By the age of 16, she's living on her own. The last one is justified in that commoners like her are encouraged to finish their (limited) schooling and join the workforce as soon as possible.
By the end of the First World War, the title character of the Biggles stories is 19 years old, and a Major in the Royal Flying Corps. This is because he A) lied about his age to join up at age 16, B) was promoted from Second Lieutenant to Acting Captain mostly on the basis of having survived two and a half years of constant combat, and thereby become the kind of veteran you needed commanding the newbie pilots and C) was finally promoted into a training post (one day before the end of the war) because PTSD had left him alcoholic and possibly suicidal, and his commanding officer needed an excuse to send him back to Britain.
The short story "Built Down Logically" by Howard Schoenfeld opens with a lecture being delivered to an auditorium of students — by a genius Ph.D. of the ripe old age of two. When two students sitting at the back discuss the unlikelihood of this and decide the infant lecturer can't possibly be real, he promptly disappears in a Puff of Logic.
Cal Leandros: Niko Leandros may be Wise Beyond His Years, he may have raised himself to take many levels in badass, with little or no help/schooling whatsoever in his childhood, but it's incredibly implausible to believe that as a 4-year-old, he was capable of taking care of a newborn baby.
In the Irish epic The Cattle Raid of Cooley, Cú Chulainn is a magnificent warrior trained in superhuman feats and able to overcome each and every one of Connaught's champion warriors, at about 16-17 years. One opponent calls him out on it, refusing to fight a beardless child. Cu Chulainn runs off to find a goat, trim some of its hair, and make a fake beard for himself to challenge the warrior again.
A Certain Magical Index has quite a bit of this, much of which is justified in one way or another.
- On the science side, every single esper is under the age of twenty. It is strongly implied that the power development program (at least in its most recent, most effective form) is only about a decade old, so it makes perfect sense that there are no adult espers. The fact that most of the non-esper Badass Normals on the science side are also teenagers is less justified, but there also only a handful of them, so it's not something to worry about too much.
- On the magic side, it appears that the leader of every single magic cabal, cult, and secret organization is a 12-year-old loli, but it's implied that most of them are significantly older, and just using magic to decrease their age. There are ones who are genuinely young, though; Stiyl Magnus is a veteran fire mage at age 14, and Tsuchimikado was Necessarius' feng shui master at the ripe old age of 15. Kanzaki is the magical equivalent of a nuke at age 16, but then she's a Saint, and was born with her power.
The Chronicles of Narnia:
- At the end of The Lion, the Witch and the Wardrobe, the four Pevensies become kings and queens of Narnia. Peter is the High King as the oldest, but he's still just a teenager. And they're preferable to the evil 100-year-old sorceress who ruled Narnia before them. Lucy likewise is Wise Beyond Her Years and she's only eight.
- Aslan seems determined to call quite young children for missions that will save Narnia, although he does at least ensure that older and wiser characters like Trumpkin, Puddleglum, King Tirian and the Dawn Treader crew help them. He appears to summon them so they can learn lessons in Narnia they'll need in adulthood later in life.
- Prince Caspian's titular prince also ascends the throne at an extremely young age. He's just said to be the same age as Peter, who is still a teenager at this point. The BBC adaptation made him even younger (the actor, Jean Marc Perret, was 14), but the film version aged him up to be vaguely late teens or twenty-something (Ben Barnes was 26).
Virtually every book Tamora Pierce has ever written, though it's most highlighted in The Circle Opens, where each of the four protagonists is a fully qualified mage at the age of 14, much to the dismay of 18-year-old trainees who won't get their credentials for another couple of years. The Tortall Universe has this in general. It's justified due to the medieval setting when the age of adulthood was younger, so it's quite common to see a 16-year-old cop.
In Landish's Club X series, Lynn — a woman in her thirties — runs a highly successful business catering to the wealthy, can effortlessly intimidate mafia goons, and gives invariably correct advice to the protagonists in her spare time. None of them understand how she does it.
Jules Verne lesser-known novel Dick Sand, A Captain at Fifteen, which is rather self-explanatory.
Discworld: Tiffany Aching, who defeats the Queen of The Fair Folk and stares down Granny Weatherwax, at the age of nine.
Divergent has Four and Eric in prominent positions within Dauntless at the age of eighteen. Four is said to be something of a Child Prodigy but was in fact offered an even bigger position and turned it down. His prequel POV novella shows that Eric got his position in exchange for being a spy for Jeanine. By Allegiant, some characters expect Tris to assume control of Dauntless when she's only sixteen. The film adaptations seem to combat this by having Four and Eric played by actors in their mid-twenties, making it a little more plausible.
In Duumvirate, genetically engineered Northberg children become Illuminati at eight. Taking advantage of their inexperience is generally a bad idea.
Earth's Children:
- Vorn is only 13 when he becomes Broud's second-in-command. Though an adult by Clan standards (they reach physical maturity much sooner than Cro-Magnon), he's still very young for the role, he was only given it because Broud is his best friend, and Brun worries his inexperience could endanger the hunters. Even he seems uncomfortable with it, but there's no arguing with Broud.
- Zolena, aka Zelandoni Who is First, provides a downplayed example; it's mentioned on a number of occasions that she is unusually young to be the leader of the zelandonia, though seeing as she's shown to be exceptionally skilled and more than capable of handling the challenges that come with the position, it's likely justified (she's indicated to be in her 30s when she takes up the role).
Laurence E. Dahners Ell Donsaii — Ell herself. Many people initially think that NO WAY this young girl can be CEO of D5R. Until they told it's Ell herself. It's worse if if it's Ell video-calling person who didn't knew her before. Her son Zage. Nobody, except parents and Ell's security team knew WHO Gordito actually is. Everybody thinks Gordito is either really good biomedical scientist or nickname of team. He is. He is also 6 y/o at time of book 14.
In Orson Scott Card's Ender's Game:
- Ender Wiggin's older brother Peter basically becomes President of Earth at age 13, due to his online debating skills. In the subsequent Ender's Shadow series, Card puts his age nearing his twenties. Peter is only elected due to multiple countries seeing him as the least amount of threat to their sovereignty, and the decentralization of the power of the office. He also defuses a war and calls several countries out with controversial information on their activities.
- There's also Ender and every kid at the Battle School. Ender destroys an entire alien race by the age of 9 or so, and then shortly after, he writes a book and starts a new religion. Not bad for someone who hasn't hit puberty yet. This trope is also basically the whole point of the Battle School.
- Valentine Wiggin is also instrumental in Peter's rise as Hegemon, and at the age of around 11, she becomes a powerful demagogue who directly influences current events and shortly after, becomes a very influential historian.
- Qing Jao in Xenocide, who is the sole person to discover Jane's existence, and she's only around 18 or so, with Wang Mu, her even younger assistant, who's just as brilliant, if not more so (those two are justified in that they're genetically modified to be super intelligent, though).
- Bean is also a genius and in Ender's Shadow is revealed to be a facilitator of many of the events in the previous books.
In Fifty Shades of Grey Christian Grey has become a CEO of a company and a billionaire...at age 27
Full Metal Panic!:
- Sousuke Sagara is 16 at the beginning of the series, but he's already a fearsomely skilled sergeant in a paramilitary organization, although this is explained by a history as a Child Soldier in Afghanistan; its also a way to logically hang around the schoolgirl-aged Chidori. The series milks a lot of both comedy and drama from the fact that Sousuke has no skills whatsoever beyond what is necessary to survive in a warzone, and is completely out of his depth in any non-combat situation. The series also pulls no punches in showing exactly what kind of childhood makes someone a fully trained bodyguard and mech pilot at age 16.
- His commander, Teletha "Tessa" Testarossa, is about the same age and has her position almost solely by virtue of the bizarre racial memory gift possessed by those called The Whispered, which meant that she designed the submarine.
- Sousuke's colleague Kurz Weber also qualifies, though not to quite the same extreme as Sousuke and Tessa; he's only nineteen at the start of the series and the Light Novels eventually reveal that he began training as a sniper at the age of about fifteen.
Galactiquest: The crew of Celestion-5 are making the first trip to Neptune despite at least half of the crew being under 20. Their eighth member takes this further, being 15 years old when he first joins.
Gemini Game: BJ and Liz O'Connor are 15 years old and run Gemini Corporation, the best-selling video game and virtual reality game company in the world, which they inherited from their parents.
The Genius Prince's Guide to Raising a Nation Out of Debt (Hey, How About Treason?):
- Prince Wein, regent of the kingdom of Natra, graduated from the Earthworld Empire's top military academy at only 15 years old. Now, at age 16, it's indicated that he'll very soon be expected to marry for political reasons. The anime adaptation doesn't mention Wein's age, which could give the impression that he's a good three or four years older if you haven't read the source material.
- The same applies to Princess Lowellmina of the Earthworld Empire, who is the same age and graduated from the academy at the same time.
In Hugh Laurie's novel The Gun Seller, the narrator (presumably sarcastically) describes his lawyer as a 9-year-old. There's also a 12-year-old banking exec.
Haganai has Maria and Kate, who are both teachers and nuns at the age of 10 and 15 respectively. Maria not officially, though she's capable of the teacher part — but the characters have been expected to buy her in both roles for seven books before they find this out.
Harry Potter:
- This is the premise of Harry Potter; he's famous because he survived the killing curse, which is supposed to be impossible, when he was a baby, in the process defeating Voldemort. The only other person to stand up to Voldemort so successfully is the very old Albus Dumbledore who is regarded as the greatest wizard living.
- Harry's parents, Lily and James Potter, were canonically only 21 when they died. It's not impossible, but it is a little strange — by that age, they'd been married, had a kid, were core members of the Order of the Phoenix actively fighting against Voldemort, and had amassed a large fortune (Word of God is they inherited it from James' parents, but this isn't clear in the books) despite barely being out of the equivalent of high school. It also raises questions about Harry's grandparents. Presumably they're all dead, but going by their kids' ages they were probably no older than sixty and could have easily been in their forties when their children died, which is pretty young for them all to have died naturally even without factoring in James' parents extended lifespan and magical healthcare. In the films, they are played by actors who are obviously middle-aged, despite their graves in the seventh film giving their canon ages. Rowling herself has admitted she probably should have made them older.
- Subverted when Tom Riddle asked to become a teacher as soon as his education was over. As he was only eighteen, he was turned down.
- According to Word of God, Harry and Ron become Aurors later in life without finishing school — since their reputations help them rise through the ranks. Hermione however does go back to school, finishes her exams and doesn't become Minister for Magic in The Cursed Child until she's in her forties.
- Lampshaded in the third book, where Hermione is given charge of a time travel device at only thirteen. She says that Professor McGonagall had to write plenty of letters to vouch for Hermione's character, letting the Ministry of Magic know that she was a model student who would use the device sensibly.
Heralds of Valdemar: After the events of Storm Warning Karal Austreben, personal secretary of the first Karsite envoy to Valdemar in centuries, was confirmed as the replacement for his assassinated predecessor in dealings with a ad hoc alliance dealing with an incoming magical catastrophe. He is seventeen at best^note and looks even younger than he is. For all that he is very much Wise Beyond His Years, the Son of the Sun is that short on people she can fully trust not to bungle relations with the "Heretical Demon Riders" her predecessors have been waging holy war upon for centuries, and Vkandis Sunlord himself wants the kid on site; this is a bad thing and Karal collapses from the stress halfway through Storm Rising.
In It Ends with Us, Ryle is stated to be a 30-year-old neurosurgeon; it generally takes at least 15 years to become a neurosurgeon upon graduating high school, so it's highly unlikely Ryle would be a qualified neurosurgeon at his age. Author Colleen Hoover admitted this was something she overlooked; she'd set his love interest Lily's age at 23 and didn't want Ryle to be too much older than her, so she made him 30 without considering the effect this would have on his chosen career.^note
Key To Conflict: Gillian Key, an American, is a psychologist, Marine officer veteran and experienced vampire hunter at age twenty-five. This is basically impossible in the US Marine Corps, and probably explains why she could not deal with the stress of a vampire ambush.
Kindling Ashes: Giselle is a teenager and yet she is the leader of the Firesouls because she is host to the Alpha Dragon. He's the one they're truly following with Giselle as his interperter of sorts. For the same reason, she becomes the Alpha Flier.
Legacy of the Dragokin: Lydia is 15 years old and the sole general of the Baalarian army. This does not go unaddressed; she has critics accussing her of nepotism because her grandfather's The Emperor and she does her best to act like an adult so her subordinates will take her seriously.
In Galactic Patrol, Kinnison is given command of the superbattleship Britannia as his first assignment out of the academy. Kinnison notes that it normally takes ten years of proven accomplishment to rate command of a first-class vessel, and that he is only getting this command because Britannia is a new and dangerously experimental design.
Given that the girls of the Magic Attic Club are ten and going to various times and places using magical means, they often engage in jobs much above their age range. For example, Keisha is a lifeguard when she's only ten and Alison is a camp counselor, when there is a minimal age for such jobs due to risks and safety.
The Seguleh named Senu from the Malazan Book of the Fallen is all of 14 years old and an Eleventh Level Initiate in the Seguleh hierarchy, which is based on fighting prowess and where the first one thousand or so ranks can only be taken up by one person each. Not too young to join of a punitive army against a cannibalistic empire, apparently.
Poul Anderson's A Midsummer Tempest uses it in universe: Prince Rupert's extreme youth for his military accomplishments is commented on by his captor.
Nathaniel from Mindblind graduated high school at eleven and college at fourteen.
Used in Larry Niven and Jerry Pournell's The Mote in God's Eye. The way FTL jumps work affects the nerves of the crew, with older crew taking much longer to recover. So the military is organized such that most ship commanders tend to be mid to late twenties to trade off the youthful ability to function versus the experience issues.
At the end of The Mysterious Benedict Society, The Reveal takes place that Constance is 3 years old, or rather, that she is becoming it at the end of the book. To be fair, she is much weaker than any of the other characters, but still.
No Country for Old Men: Discussed by Sheriff Bell, who recalls how he campaigned for and won the office of sheriff of a county as big as Delaware at the age of 25. He notes similar stories, such as an 18-year-old deputy and a 21-year-old pastor who was a pillar of his community.
Teliha from Phaeton is not just an expert on the field of monsters, she is powerful enough to bind souls to machines, break the bonds of mind and body, and bound countless enigmoids to her will before she's even appeared, and when she did, she was 12. Justified since she's been fighting in such a world since three months of age.
The Saga of Tanya the Evil has the titular character 2nd Lt. Tanya Degurechaff, an extremely powerful Military Mage, ruthless Magnificent Bastard, and all aroundOne Girl Army who volunteered and later graduated from the imperial officer academy and started to make a name for herself as a gifted and fierce soldier at around the age of 10 years old. By the time the series begins, about a year later, Tanya has already earned herself the nickname The Devil of The Rhine, is rapidly moving up the ranks to Lt. Colonel, and is in command of her own personnel elite battalion of mages who's first mission ended with them pretty much defeating an entire country, has severely demoralized another enemy country in their next two missions, and her ideas and philosophies about war are starting to influence the policy of The Empire itself. All at around the age of 10 years old. Though this is somewhat justified, by her being the reincarnation of a Japanese Salaryman who was born with all her prior memories and knowledge intact.
Slayers has the four main protagonists. Lina in particular is possibly the only sorceress in the world able to manifest the power of the world's Guardian of the Multiverse, the one being above God and Satanic figures Ciefeed and Shabranigdo respectively, the Lord of Nightmares, and utilize it effectively. Her magical level is also noted to be much higher than average. At the start of the series, she's a tender fifteen.
- Zelgadis the chimera sticks out even more, depending on the adaptation. He's a hyper-intelligent chimera, able to strategize like a general, utilize effective swordplay and magic, and use a nautical sextant with ease. Throw in the ability to play the guitar in the anime, and you have an ace of a sorcerer at nineteen (or sixteen, in the anime).
- Princess Amelia is a well-rounded priestess and an effective healer, not as powerful as Lina, but being a 14- (anime)/15-(novels)-year-old diplomat is nothing to sneeze at.
- Gourry is a phenomenal swordsman, but is twenty-two at the start of the series, and Word of God stated that he was a mercenary/soldier since seventeen. Depending on where you live, that's actually not uncommon in Real Life, so he averts this trope to a degree.
Deconstructed in A Song of Ice and Fire. Assuming adult responsibilities at a young age is one of the many, many reasons why the entire cast is Royally Screwed Up.
- Robb Stark, who declares himself king of a breakaway country at the age of 16. Although he does well militarily, he has a tendency to misplace his trust and recklessly breaks an oath without considering the political implications. This ends up costing him his life.
- Daenerys Targaryen manages to become queen regnant of the nomadic Dothraki ("The Khaleesi of the Great Grass Sea"), liberator of the slave cities of Astapor, Yunkai, and Meereen ("Breaker of Shackles"), queen consort of one of them ("Queen of Meereen"), a Dragonrider ("Mother of Dragons"), aspiring ruler of the Seven Kingdoms ("Queen of Andals and the First Men", "Protector of the Realm" etc. etc.), and a potential messianic figure ("The Prince That Was Promised") all before she turns 17. She is an idealist, but her young age and inexperience have hindered her progress, especially since she is headstrong and refuses to negotiate on issues that, pragmatically, are best to be handled with a compromise.
- Jon Snow is elected Lord Commander of the Night's Watch at 17 years old. And he wasn't the youngest Lord Commander on record - that honor went to a ten-year-old (likely initially being a figurehead elected for political reasons, as he was the son of a rich lord sending them money).
- In general a lot of ages in the series are slightly off when considering their characterization; Ned acts so much like a wise and stoic older man it's a shock to some that he's only 35. King Aerys looked and acted like a senile old man yet was just 39 when he died. Stannis was apparently a dour and dutiful man aged 19.
Space Voyages: The basic premise of the series is that three Teen Geniuses are sent on a space mission by themselves. Needless to say things don't quite go according to plan.
The Stormlight Archive:
- In the backstory, Kaladin was both a trained surgeon and the youngest squadleader in Amaram's army at 20 Rosharan years old (roughly 22 Earth years). In the second book, he becomes the first darkeyed captain ever at just twenty-one.
- Words of Radiance reveals that Shallan was only eleven when she became a full-fledged Knight Radiant, to the point that she was able to summon her Shardblade when her mother tried to kill her.
In The Story of Saiunkoku, To Eigetsu not only becomes the youngest person ever to pass the Imperial Examinations and qualify for court office at the age of thirteen, he earns the highest score and is almost immediately appointed co-Governor of an entire province (alongside 17-year-old Kou Shuurei). Similarly, by the time he was taken in by the Kou family at the age of fourteen, Seiran had already spent a year infiltrating and destroying a band of criminal mercenaries.
In Fiona Patton's Tales of the Branion Realm medieval fantasy series, the oldest protagonist out of four books is twenty-four. Children commonly go to war, and in one book two boys, ages eleven and twelve, end a siege by poisoning the defenders. Another is leading sieges at sixteen (justified by his being Crown Prince and over the age of majority in this universe).
Temeraire: Hammond becomes Britain's chief ambassador to China in his 20s through a combination of self-avowed Insufferable Genius, single-minded dedication to his work, and the good luck of getting caught up in the protagonist's wake during a major diplomatic crisis.
In The Traitor Son Cycle, the Red Knight is 20 years old and has been leading his mercenary company for the last four years. While this is a world where 13-year-old kids fight, it's still a pretty early start, considering that at the age of sixteen, Michael is still Red Knight's squire.
In Villainess Level 99, reaching level 99 in this RPG Mechanics 'Verse is an accomplishment that no one expected to be possible within a lifetime, therefore people are skeptical when they learn Yumiella is already level 99 at merely 15 years old.
Justified in the short story by Harry Harrison, War With The Robots. The command staff are all teenagers as anyone older lacks the reflexes and flexibility of mind needed to plot strategy in the fast-paced war. They retire after four or five years.
In The Wheel of Time, several major characters rise to incredible heights by their early 20s:
- The protagonist Rand al'Thor becomes the leader of several countries, a Master Swordsman, and The Archmage, though he's implicitly helped along by being The Chosen One and having subconscious expertise from his past life.
- Mat Cauthon is hailed as one of the greatest military leaders of all time, thanks in part to receiving the memories and expertise of innumerable historical leaders.
- Perrin Aybara leads his people in ridding his town of Trollocs and Whitecloaks and also becomes a great military leader. As a ta'veren, destiny has an important role for him, but he has no other special advantages like Rand and Mat.
- Egwene is elected leader of one faction of the Aes Sedai Magical Society at 20 and leads it to victory against the other faction, a feat not even the legendary general Artur Hawkwing accomplished. Though she was elected with the intention to use her as a Puppet King, her achievements are due to her personal skill, honed by several top-tier mentors.
- Nynaeve became village Wisdom (a healer, prognosticator, and head of the Women's Circle) at the unprecedented age of 24 due to her mentor's untimely death. Deconstructed — though she's incredibly talented and was a very successful Wisdom, her position isolates her from her peers and her youth forced her to work much harder to be taken seriously.

Music

Dar Williams's "We Learned The Sea" features a skillful and stoic ship's captain who's A Mother To Her Men. She's also, apparently, 8 years old, and addresses a crewmember who's even younger^note:
I am the captain and I have been told^note
But I am not shaken, I am eight years old
And you are still young, but you'll understand
That the stars of the sea are the same for the land
This seems to be a standard in Mothy's Evillious Chronicles:
- Banica Conchita, by the age of 20, was already renown for saving her country from a famine by introducing new foods and recipes.
- By the age of 6, Mariam Phutapie was already a professional assassin and was able to join the army. By nine, she was already a well-known general and by the age of 20, she was considered one of the Three Heroes of Lucifenia and known throughout Evillious. Justified a bit in her case, since she was trained as an assassin from birth, therefore having the skills she needed for her careers. Her adoptive mother being a high-ranking minister might have also helped.
- Before the age of 12, Leonhart Avadonia was already a skilled, well-known swordsman and a soldier in the army. By the age of 20, he was already well-known in Beelenzia for his militaristic campaigns and was known throughout Evillious as one of the Three Heroes of Lucifenia by his mid-20s.
- Leonhart's daughter, Germaine, became the leader of the Lucifenian Revolution at the age of 20.
- Irina was elected to the throne of the Magic Kingdom Leviantha at age 17. Subverted a bit, since she had to kill three other candidates to get there, but even becoming a candidate was no small feat, apparently.
Aaliyah was signed to a record label at the age of twelve, released her first album at fourteen, and by the time of her sudden death at twenty-two, she was considered one of the defining artists of R&B — and in fact the Trope Codifier for modern R&B singers.

Podcasts

Actors' Life Podcast:
- Discussed when Bobby was shocked to learn that Adam Kearney was only nineteen. He had set up AK Productions before he was even out of school, and had been working actively in the industry for nearly two years.
- Greg Young had also been acting for three years, produced several shorts and music videos, had extensive experience working on set and was already planning his debut feature — aged only nineteen!
- Rebecca Christina Flynn began acting from as early as four, and was already an experienced drama teacher when she turned twenty.

Professional Wrestling

Defied to some extent by WWE. Their policy says that no wrestler under twenty one may be called up to the main roster. They have signed people under that age before but they remain in developmental until they come of age. They since amended that to not even signing people under twenty-one (Aliyah was the youngest person on the roster at the time, having been signed at only nineteen).
Randy Orton became the youngest person in history to be World Heavyweight Champion at the age of twenty four, and only two years on the main roster.
Depending on when a wrestler begins their training — it's quite common for some to start in their teens — they can have held multiple titles by the time they're in their early twenties. Paige for example started training when she was thirteen and won her first title at fifteen. Thus it can become quite jarring for someone of only their mid-twenties being considered a veteran, even if they've been in the business ten years. This ended up backfiring on her — as the injuries sustained from having started training so young led to her having to retire at the age of twenty-five — though she eventually made a comeback after her spine healed.
In the United States there are laws that vary from state to state of just when one can become a pro wrestler, and while few states seriously monitor the independent circuit, no one likes to draw attention to the fact they may be breaking the law, hence CZW putting the Briscoes in masks when touring between states^note. In Mexico, there is an intricate system of height and weight limits that allows young boys to fight against people, if not their own age, then at least their own size as they grow up, Rey Mysterio Jr. easily being the most famous beneficiary but numerous other cases such as Virus exist. The Japanese independent circuit stands out in this regard as their seems to be no law and no weight classes beyond junior-not junior^note so it's not unheard of to see children as young as eight in the ring against full grown adults. In World Wonder RING STARDOM the 11-year-old Azumi/AZM was technically a "veteran" against comparative 29-year-old rookies like Hiromi Mimura. In fact, Ice Ribbon has had so many little girls in its rings it that it became less improbable in their context and more their calling card (training with Emi Sakura for a chance to team with Manami Toyota probably was a strong lure for the young fan).
JD McDonagh began his training at only twelve, and thus was considered a ten year veteran by the time he was twenty-two. He'd already been to Japan twice by that age!
Another Irish wrestler LJ Cleary started training right before he turned fourteen, and won his first world championship at only seventeen!
The Wood Brothers became tag team champions for the first time when they were still in school! Lewis was eighteen and Lorcan was sixteen.

Puppet Shows

Joe 90: The whole point of this show. A child secret agent was thought to be less conspicuous than an adult one, and every week his scientist father would add knowledge into his mind that was only accessible when Joe wore the glasses.

Mythology & Religion

Cú Chulainn of Celtic Mythology is a One-Man Army demigod armed with a powerful supernatural spear, can transform into a gigantic Eldritch Abomination when angered, has multiple affairs with women throughout his life despite being married, fathered at least one 7-year-old child and ultimately dies young on the battlefield at 17 years old. Which means, at the absolute minimum, he fathered a child when he was only ten.
The Shahnameh uses this as a plot point in one of the most tragic stories: The Hero, Worlds Greatest Warrior Rostam has an affair with princess Tahmine, whose town is behind enemy lines. They say goodbye, he gives her a unique jewel as a parting gift and asks her to give it to their child, if they have happened to have conceived one and he leaves and never tells anyone about what went down. Meanwhile, she gives birth to a boy who seems to have inherited his father's Super-Strength. After only a month, the baby looks a year old. Sohrab eventually grows up, and despite being a true Mama's Boy he becomes obsessed with his father's legendary reputation. Thinking that his father would make a great ruler, he decides to invade Iran, overthrow the Shah Kaykavus and install his father on the throne, and then double back north and dispose of the barbarian warlord Afrasiab once and for all. Afrasiab, Manipulative Bastard as he is, believes that this suspiciously powerful random 10 year old bastard boy is probably the only person who could have a shot at actually killing Rostam in combat, so he forms an alliance with Sohrab and gives him control of the Turanian army so he can invade Iran, where he faces off with Rostam. Due to them being evenly matched, they end up fighting each other repeatedly, and neither of them realises who they're fighting because A) Rostam is Withholding Their Name and B) While it does occur to Rostam that his possible son or daughter with Tahmine could potentially have this much strength and talent, he dismisses the idea because even if they did get pregnant, that child would be waaay too young, right? Anyway, after a lot of cheating, Rostam eventually lands a fatal stab wound, and as Sohrab is laying down dying he finally reveals himself as "the son of Rostam". Rostam rips off the boy's armor and sees the jewel on his armband, and his Oh, Crap! reaction turns into a complete and total Heroic BSoD, while the narration goes all What the Hell, Hero?

Roleplay

One flashforward in Dawn of a New Age: Oldport Blues shows Simon working as the head of an FBI division at the ripe young age of 22. This is lampshaded by one of the men working under him, who is terrified by the idea of what Simon did to get the job at such a young age.
Open Blue:
- Führer Katrina Seran from v2 to v4 achieved the equivalent rank of Fleet Admiral in the Seranni Navy at the age of 20, and became ruler of her country a month later when her father, the Kaiser, "mysteriously" died. It helps that she's quite the Evil Genius.
- Another qualifier is Rhianna von Adolph, the equivalent of a Colonel and leader of the special forces division of Seran's intelligence agency at the age of 26.
- A third is Elysia Schneider from v2, a Vice Admiral at the age of 27. Her Backstory furthermore indicates that she has held this rank for a few years now. Apparently, being one of the Führer's classmates is a surefire way to end up with a lofty position within the Reich.

Tabletop Games

It's fairly common for a Player Character to end up with this trope late in a campaign in many role-playing games, such as Dungeons & Dragons. High-level NPCs in most setting stend to be middle age or even quite elderly (especially wizards). Player characters, on the other hand, are commonly young adults (in their 20s or the equivalent age if they're particularly long-lived like elves), and campaigns can see them becoming high level characters in only the span of a year or two in-universe.
Chronopia: Rodili Lysander ascended to the title of Lord in his sixties. This is impressive considering that city elves are usually not considered adults until the age of 200, and a 60-year-old is barely potty-trained by elven standards.
Shinobigami: Otogi Private Academy lists "Primary School" as a possible cover for your badass Ninja PC.
Warhammer 40,000: Downplayed. Every Space Marine was recruited due to being an exceptional warrior, but the genetic engineering process only works with prepubescent males, so every Space Marine was once a Child Soldier with a particular emphasis on the soldier part. Planets wherein Everything Is Trying to Kill You are naturally a popular place to find these boys who Had to Be Sharp. That being said, their training (much of it actually taking place in battle) will take decades longer before they are being officially inducted as a full-fledged Space Marine, so even the most precocious recruit will still take a long time more to be truly seen as an Angel of Death.
Warhammer Fantasy Roleplay:
- The adventure Paths of the Damned has the Master Wizard Gabrielle Marsner, a mysterious figure who lurks quietly in dark corners, shrouded head to toe in purple robes, giving rise to rumors that her mastery of the Lore of Death has reduced her to a hideous walking corpse. The truth is she's a prodigy who's still in her early twenties and is self-conscious about it.
- The first Elector Count of the Mootland attended her first election as a newborn. Justified because, upon creating the County for the Moot, Emperor Ludwig stipulated that the office could only be held by people born in that county. Rather than forfeit their seat, the local halflings took advantage of their three-month gestation period and got busy.

Toys

Barbie: Barbie doesn't look like she's even thirty but has done things like become president of the United States. Multiple times. This aspect of her character gets poked fun at in Barbie: Life in the Dreamhouse.

Visual Novels

In real life, one can reasonably expect to start a career in law in their late twenties. In Ace Attorney, on the other hand?
- Only four of the attorneys in the original trilogy appear to be out of their twenties: Winston Payne, Marvin Grossberg, Godot, and Manfred von Karma.^note Of course, considering all the other idiosyncrasies of the justice system as presented in the games, ridiculously young attorneys are pretty much par for the course. In some places it's possible to be a lawyer without going through grad school, but really, it's all just handwaved. (That said, Japan has legal courses in undergraduate schools, so a 24-year-old can take the Japanese bar exam right out of college without needing another few years of law school... however, the localization elected to keep their original ages rather than bumping them up a few years to be more plausible for someone who had to go through the American law school system.)
- In some characters' cases this is Hand Waved by saying they went were born/raised/went to school in Germany, that land of remarkably progressive laws and very easy bar exams. Miles Edgeworth debuted at 20, Franziska von Karma debuted at 13, and Klavier Gavin was a lawyer and a rockstar at age 17.
- Lana Skye was 29 and Chief Prosecutor. Two years before that, she was a highly ranked and very well respected detective who was only getting ready to become a prosecutor in the first place. Also, she is shown wearing 3 Prosecutor of the Year awards, despite being a prosecutor for only 2 years. Simon Blackquill had to have started prosecuting some time before he was twenty-one, when he was arrested, and since his courtroom tactics are so well-known even after seven years in prison, it's likely he started sooner rather than later.
- The defense attorneys get hit with this trope too. Mia Fey passed her bar exam by the time she was 23, and had her own law office by the time she was 27. Her protégé Phoenix joins her at 24. Apollo Justice himself is even younger than Phoenix when he becomes a lawyer (22), but Athena Cykes beats all of them by joining the Wright Anything Agency at 18. (Also Hand Waved by her studying in Europe.) Kristoph Gavin was also famous and well-established by 25. Calisto Yew was 22 when Edgeworth met her, and she'd been practicing law for at least a couple of years. Not that she was actually a lawyer, but nobody seemed to doubt she was one due to age or incompetence. If her given age is accurate then her real occupation actually makes her age even more improbable since it would have made her a very competent spy and assassin at the age of 19.
- This doesn't just apply to those with careers in law. Adrian Andrews is a 23-year-old manager, Ron DeLite, a 22-year-old Chief of Security, Valerie Hawthorne was a policeman at 18...
- Dual Destinies also reveals that there's a law school known as the Themis Legal Academy that teaches students to be attorneys, prosecutors, and judges at high-school ages. One of the students at Themis is actually 25, having been held back repeatedly for seven years. In our world, 25 would still be fairly young for a senior law student, but everyone in-universe is shocked by how old he is. Considering that Klavier and Eustace Winner from Investigations 2 are both confirmed alumni of Themis and both began prosecuting at age seventeen, lawyers and judges in their late teens may actually be the norm in the Ace Attorney universe.
- All of this is parodied in an Awkward Zombie strip.
- In The Great Ace Attorney prequel spin-off duology, we have our most ridiculous example yet in Iris Wilson,^note a famed and prolific novelist and certified medical doctor... at the age of ten. In the Victorian Era. On the other hand, the lawyers themselves finally take a step towards avoiding the trope: while they're still in their early twenties, Ryunosuke and Kazuma are explicitly still university students getting on-field experience rather than fully-fledged professionals. They're still fairly improbable, Ryunosuke being an English major who got the job after mere weeks of studying law after Kazuma, the actual law student, is left for dead due to an unfortunate accident but that doesn't have anything to do with his age anymore.
- The trope is occasionally deconstructed; Athena is skilled legally but her lack of emotional maturity means it's fairly easy to bully her into a breakdown in court, and Eustace Winner is something of a doofus who's in way over his head. And the only reason Eustace passed his classes and the bar so young is because his father bribed his teachers to give him good grades.
Danganronpa: This trope is pretty much central to the setting, as Hope's Peak Academy looks for students who are high-school aged and match or exceed adults in their area of expertise, with some talents being more ridiculous than others.
- Danganronpa: Trigger Happy Havoc: Byakuya Togami has made billions in day trading, just for side money. He implies that his family is so powerful that just being a Togami is enough to participate in the stock market as a teen. Chihiro Fujisaki is a programmer good enough to create a functional AI on an old laptop in a few days' time. Toko Fukawa is a bestselling romance author. Celestia Ludenberg makes most of her gambling money in underworld tournaments because she's too young to do it legally. And Sakura Oogami may look like she's in her thirties, but she is in fact a teenager who can defeat adult martial arts masters.
- Danganronpa 2: Goodbye Despair: Teruteru is a chef with 3 Michelin stars (the youngest chef to earn his 3 stars in reality was Marco White at 33), and Peko Pekoyama acts as a bodyguard and hitman.
- Danganronpa V3: Killing Harmony: Kaito Momota is a trainee astronaut, and had to fake a college degree to get into the space program. Ryoma Hoshi went on a Roaring Rampage of Revenge against the mafia with his tennis skills. Korekiyo Shinguji has traveled the world as an anthropologist. Tsumugi Shirogane already enjoys corporate sponserships for her cosplay work. Kirumi Tojo is a hypercompetent maid and Team Mom, not to mention de facto Prime Minister of Japan. Maki Harukawa is an assassin. Miu Iruma is a reknowned inventor, and if Kokichi Oma is to be believed (and he probably shouldn't be), he's the leader of a Nebulous Evil Organization with world-spanning influence.^spoiler This is at least justified in this game since Danganronpa is an in-universe TV show. None of the talents are real anyways, so the improbability doesn't matter. Though Tsumugi still counts, if she really is a high schooler, since is still a writer for the show and is put in charge of running the game.
- The crowning examples of this trope would have to be the Ultimate Despair Sisters. Mukuro Ikusaba was a member of an elite Private Military Contractor group as a young teen, and was such a good fighter that she was never hurt in combat. Junko Enoshima ended up causing an Apocalypse How while still in her teens.
GENBA no Kizuna has a less blatant than usual example with Nobuhiko Shinpuku, who has been police superintendent since he was 34, with his in-game biography admitting that he was unusually young when he got the job.
In Everlasting Summer, the majority of the romanceable characters look, act, and are treated as if they are in their late teens. A disclaimer at the start of the game even claims that none of the heroines in the game are over the age of 18. Yet they are all members of a youth group called the Young Pioneers, ^note a group which has a membership age range from 10 — 15.
In the May-be Soft comedy Patvessel, Hikari, a hopeless 18-year-old Genki Girl, is installed as the captain of a city patrolling(...) fully functional battleship because her father is the chief of police. At her age, much less her level of experience, she really shouldn't be doing that.

Webcomics

Darths & Droids: As in The Phantom Menace, Queen Amidala is 14 years old. In the webcomic, it's because the character was improvised by Sally, a little girl who thinks 14 is "very old and smart", and the GM ran with it.
Sally: All the peoples voted for her!
El Goonish Shive: Tedd, a high school student, is being given a government funded lab to study the recent changes to magic.
- This is, understandably, a shock to Tedd himself and his friends when they find out but, as is explained, Tedd actually is the most qualified person available due to being a budding scientist who is also a seer (an extremely rare person who can literally see how magic works) and already having demonstrated an aptitude to study the relevant things.
Messenger: Akiara is a 17-year-old warrior. Justified given the Post-Apocalyptic setting.
In morphE, the 19-year-old Amical is a Master-level mage and a high-ranking member of Magical Society with a huge manor house, lots of wealth, and some extremely valuable magical assets. Word of God reveals that it's a subversion: he's actually over 100 years old, thanks to a Deal with the Devil preserving his youth.
Questionable Content: By age 19, Liz has been working at a prestigious research institute for two years, and had two doctorates when she started. Lampshaded and handwaved as "it shouldn't even be possible but she did it anyway". However, even Child Prodigies aren't immune to burnout, and she's spent those two years hiding in her office.
In Strong Female Protagonist, Paladin — a.k.a. Professor Lisa Bradley — is 21. But since she's been designing cutting-edge technology since she was 15, the heads of the New School overlooked her lack of a doctorate in making her head of the new Robotics Department.
The main protagonist of Teenage Mercenary, Ijin Yu, was found after a plane crash at 8 years old and turned into one of the world's best special forces operators. By the time he is returned to his family in South Korea at age 18, he is effectively as skilled and experienced as members of actual military special forces throughout the world and routinely beats adults much older than he is who usually underestimate his combat skills due to his age.

Web Original

For Reddit, this has been commonly referenced as one of the (many) signs that a story might be fake. There seems to be an amazing amount of people writing in who are in their early 20s and yet drawing "six figures" (even typing that expression in might get you an automated bot response) and have established houses as a result of their hugely successful careers despite growing up in under-priveliged households. Despite being such amazing prodigies, these people decide to visit a website with a large teen audience to ask for advice. Ditto goes for people who are well into adulthood (30s, 40s, or sometimes much higher) who nonetheless "pitch a fit", "have a meltdown", or "burst into tears" at the slightest inconvenience or have something that doesn't go their way. While there are indeed a few people of this age that might react in such a way, they typically would have long-known personality disorders that would make the most recent occasion unremarkable.

Web Videos

Jeremiah Arkham in The Joker Blogs looks too young to have even finished medical school, let alone be married and running his family's asylum.
The Scootertrix the Abridged versions of the Cutie Mark Crusaders, are generals in the Equestrian military, despite still being in elementary school.
The third episode of Final Fantasy VII Machinabridged lampshades the moment from the original game where Tifa entrusts Marlene^note to run the 7th Heaven bar while AVALANCHE goes off on another mission. Cloud naturally expresses concern, but Barret and Tifa assure him that they've equipped Marlene with a loaded gun for her protection. And per a short Cutaway Gag later in the episode:
Bar patron: Excuse me, aren't you a little too young to be working in a bar?
(sound of a gun cocking)
Marlene: Aren't you a little too old to be asking stupid questions?

Western Animation

Tintin in The Adventures of Tintin (1991) but maybe he's an incredibly well preserved runt ...
- In the non-canonical novel, he has a genetic condition that keeps him as an early teen. When he considers the complexities of adult life, he considers this a blessing.
Arthur: In "Arthur Babysits", Arthur, an eight-year-old boy, is entrusted to babysit two four-year-old twin boys. An eight-year-old is far too young to hire as a babysitter; a job usually reserved for late-teens and older.
Avatar: The Last Airbender:
- Benders such as Zuko, Toph, Azula, and Katara, as well as Badass Normals such as Sokka, the Kyoshi Warriors, the rest of Ozai's angels, Jet and his freedom fighters are all incredibly powerful and trained, but are still teenagers somehow capable of fighting on equal terms against adults who have years, if not decades, of experience over them.
- Most Avatars before Aang came along were informed of their status at 16 and spend the better part of a decade mastering their various abilities afterward. Aang was told he was the Avatar at twelve, put himself in deep freeze a few months later at most, then spent the next year after thawing out seeking instruction in bending, making up the rest as he went along.
- Sequel series The Legend of Korra has the main cast start out as slightly older, and Korra at least has had her life dedicated to training as the Avatar since she was 4. However, the Fire Ferrets Pro-Bending team become champions with a team of people who are 16, 17 and 18, and Mako (the 18-year-old) joins the police force during the six months between Seasons 1 and 2. Asami is also 18, is an expert driver that can outperform anyone (granted, automobiles are only about as old as SHE is) and goes from spoiled kid to savvy leader of her father's company, struggling to make up for the reputation his siding with the Equalists saddled them with.
  - Season 4 averts this trope, as the three year time skip put the characters into their early 20s.
Danny Phantom where 14-year-old Tucker becomes mayor of Amity Park in the Grand Finale. Plenty of "Whaaaa—?!" reactions were commonplace among the fandom, mostly due to the character never once stating any desire for any position remotely similar to that.
- Less Whaaaa—? inducing after the fifteen year old Mayor in the Middle East started making headlines.
Inversion in DuckTales (2017): Scrooge is explicitly more than a century old, but remarkably active for someone that age, and his immediate relatives are far younger than makes sense for this to be true.^note His life is explicitly artificially extended by supernatural means.
Parodied on The Grim Adventures of Billy & Mandy, when the leader of the Dinobonoids on Billy's favorite cartoon is a boy about 12 years old, yet goes by the title of "Professor".
He-Man and the Masters of the Universe (1983) featured Teela as the captain of the royal guard at age 16.
Jane and the Dragon. The castle gardener, Rake, is 13. The cook, Pepper, is 12. The jester, Jester, and the blacksmith, Smithy, are 14. There's no suggestion they're apprentices or assistants (unlike Jane herself, who is a knight-in-training under an adult mentor); they're the entire castle staff.
Jimmy Two-Shoes has 14-year-old Heloise working for Lucius Heinous VII at Misery Inc. as the company's leading product designer and developer. She's actually very good at it, since she is a Teen Genius Mad Scientist even more evil than her boss will ever be.
At the age of 14, Kim Possible is already established as an international crimefighter. Her Mission Control Wade is 10 and a college graduate, and later, Ron's adopted sister can smack down ninjas at the age of 1 (though she's a Chosen One).
Cotton Hill from King of the Hill he was 14 when he joined the army having lied to the recruiters telling them he was 18, and his many badass feats during World War II up to when his shins were blown off were accomplished when he was around 15 or 16.
The Loud House:
- The lead character's second youngest sister, Lisa, is only four and is said to have finished school up through getting a PhD. Downplayed in later seasons, where she's retconned into attending kindergarten at the same school Lincoln attends as a 5th-grader, albeit still with a genius level IQ.
- Perhaps one of the more mundane examples on the list, due to it being a lifestyle instead of anything outright career related, but Lincoln and Lisa's sister, Lucy, is an 8-year-old Goth. Whereas how in Real Life, most people who are into the scene don't really get into the style until they enter adolescence and start actively trying to form an identity.
Mike Chilton in Motorcity is 17, yet he's a Badass Driver despite only having been able to drive for a year (unless you assume he drove illegally in the past). Not only that, but he's also a very skilled fighter. As the leader of the Burners, he already has a reputation, yet most who have heard of him rarely comment on his young age. He apparently worked for Kane a year earlier, yet back then he was accomplishing alot, which makes you wonder how old he was when he joined.
Phineas and Ferb invokes this trope in the name of comedy. Whenever someone asks the two titular characters Once an Episode whether they're too young to be doing whatever absurdly ambitious project they have planned this time, Phineas responds with a deadpan "Yes. Yes we are." Hey, Refuge in Audacity works.
- Lampshaded in one episode, where one of the delivery guys apologizes for the other delivery guy asking the question and states that the guy who asked is new to the job.
- Also used on the other end of the spectrum when a character is doing something they should have outgrown.
Pound Puppies (1980s) has Holly owning a puppy pound despite being about 12. Averted in Season 2 where her aunt Katrina owns the pound.
Parodied in Recess where Jared is a literal Mr Perfect and better than everyone else at anything. The end reveals that he needs to help the president again and pilots his own jet to get there. He's 9 years old.
The Simpsons:
- In "Homer to the Max" as the family is watching the previews of new midseason shows, one of said shows is Admiral Baby which features an infant as a Navy Admiral. Marge even lampshades how improbable it is for a baby who can't even walk or talk can rise to such a high rank.
- "E Pluribus Wiggum" has Ralph Wiggum running for the US presidency even though the minimum age is 35 years and he never went to electoral college. Bart explains that under the Bush administration, the U.S. Constitution has been rendered meaningless.
- Deconstructed in "Springfield Up", which shows the origin story of Eleanor Abernathy aka the Crazy Cat Lady: at a young age, she aspired to be both a doctor and a lawyer, and by age 24, Eleanor already acquired her degrees and became both. However, by age 32, she was getting burned out from the stress of having both occupations, and we see her getting her first cat. Skipping ahead to age 40, and she's since become the Crazy Cat Lady.
South Park thrives on this trope, especially in the later seasons.
Marissa Faireborn in The Transformers, commander of Earth Defence Command. While her age is never explicitly stated, certain details mean she cannot be older than 20 (though the Japanese continuity allows her to be as old as 25, and possibly a former Idol Singer).
- In Transformers: Animated one of the minor human villains is Professor Penny Princess, who rides a flying mechanical pony and uses girly-style high-tech weapons, yet doesn't seem to be any more then 8 to 10 years old.
Work It Out Wombats!: In "Cafe Chaos," Duffy sprains her ankle and has to stay home from cooking at the Eat 'N Greet, leaving Kaya to try to cook and wait tables at the same time. Kaya hires Zeke and Louisa to wait tables, even though the both of them are only four years old. Justified, because there was no one else to do the job.
The Team in Young Justice (2010) goes on covert missions involving delicate international politics and possible death, displaying expert skill at various martial arts and sciences, and that's when they're not fighting alongside superheroes on the side. Not a one was more than 16 when they joined,^note and most began their careers even before that — Robin started at NINE.

Real Life

Five people took down HBGary. The one who social engineered their admin was a 16-year-old girl. A 16-year-old girl was instrumental in taking down a security company that has contracts with the United States government. This is possibly not the real identity however as many of these individuals use fake identities.
One interesting real fake example comes from the character Robin Sage invented for the purpose of testing how likely it was that people in the defense and intelligence communities actually checked the back stories of people on social networking sites. Her age was stated to be 25 yet she had 10 years of work experience in the cyber security community as well as a degree from MIT. Her name is also taken from the US Army Special Forces final training exercise. In addition her profile picture was taken from a porn website and chosen to look somewhat ambiguously foreign.
Arthur Rimbaud is one of the most acclaimed poets of the 19th century. His first poem was published when he was 15, and he completely gave up creative writing at the age of 20. Rimbaud went on to live for 17 more years, dying at 37, but he wrote no more poetry during those years.
Brazilian writers Rachel de Queiroz and Clarice Lispector. The first published her novel O Quinze, one of the most important books on Brazilian literature, when she was 20. The latter, who had books published all over the world, including places such as China and Vietnam, and was once called "the Brazilian Franz Kafka" by translator Gregory Rabassa, published her first book, Near the Wild Heart, when she was 23... and wrote it when she was 19.
It's surprising in Casanova's autobiography how young people started in The Enlightenment — leaving aside all the 13-year-olds he seduced, Casanova was a doctor and almost a priest by the age of 16.
The French Revolution was a young person's revolution in general, with most of the leaders being in their early-to-middle 30s. The most striking example is Louis Antoine de Saint-Just, elected to the National Convention at the age of 25, having a political career of two years during which time he wrote the Constitution, administered the government with other members of the Committee of Public Safety and served as The Political Officer for the Army of the North taking it from defeat to victory after severe setbacks. He died at the age of 27!
Napoleon was a subaltern officer at 16 and a Brigadier General at 24 (his studies at the École Militaire took only a bit longer than 1 year). During the Age of Enlightenment, skills and knowledge were held dear by the ruling elite, but they were still expensive to acquire for ordinary people, so anyone who rushed himself through school was needed and they would turn a blind eye to small faults like "he's too young". Napoleon initially didn't have opportunities in the French military because of his Corsican heritage but during the year of 1793-1794 when the Committee of Public Safety was aggressively reforming the army, he like many others found an opportunity thanks to the meritocratic policy of the army.
Alexander the Great. Conquered most of the known world in his late teens and died just shy of 33.
During the American Civil War, Colonel Charles R. Ellet at the age of 19 took command of the Cool Steam Ship his father built, the USS Queen of the West. He then wreaked havoc against confederate ships and shipping in the vicinity of Vicksburg.
George Armstrong Custer started the American Civil War as a Second Lieutenant and was promoted to Major General of volunteers while only in his mid 20s.
The youngest Civil War general was Galusha Pennypacker, who joined the US Army as a Sergeant at age 16, was promoted to Major a few months later, and was promoted to Brigadier General of volunteers at the age of 20. He became known as the only US general who wasn't even old enough to vote.
During the American Revolution, French volunteer officer Marquis de Lafayette was 19 when he became a Brigadier General.
Jimmy Page founded Led Zeppelin in 1968 at the age of 24. Before that, he was offered the role as a guitarist in The Yardbirds in 1964 (though for a variety of reasons, he didn't actually accept until 1966.) Before that he was a prolific session musician, and contributed to several songs which reached #1, and even played a song on a British television show at the age of 13.
Richard Thompson has something similar in the folk-rock genre, joining Fairport Convention aged 18, recording three hugely influential albums in 1969-1970, and leaving for a solo career aged 21 in 1971.
Ilya Svetlichnyi was a passable rock drummer at the age of three.
Martial arts movie star Jet Li won his first gold medal in national wushu competition at the age of twelve, and retired from competition to work as a coach at the age of seventeen (although attaining a black belt only requires a minimum number of years and the hard yards).
Arkady Gaidar, a Soviet writer, was a regiment commander in the Red Army of the Russian Civil War while he was 16. When the war was over, he became a writer.
Child mujahideens and similar child "soldiers" are an all-too-common, and tragic, problem in Third World countries facing violent civil conflict.
George Washington became a Colonel when he was 22. However, he got this post through connections rather than merit. And he botched an assignment so badly that it started a war between France and Britain that eventually became the Seven Years War.
At 20, Augustus was already a triumvir, one of the three most powerful men in Rome.
In his twenties Pompey gained the command of three legions, made successful campaigns in Sicily and Africa, and gained his first triumph. He also became consul when he was, by law, several years too young. It was amazingly impressive at the time.
Scipio Africanus saved his father's life with a heroic charge at the age of 17, was given command of all Roman armies in Hispania at the age of 24, and became consul and defeated Hannibal (widely considered one of the greatest generals EVER) by the time he was 31.
According to oral tradition, Sundiata Keita was only 18 when he founded the Mali Empire.
Joan of Arc never got out of her teens at all; she was about sixteen or seventeen when she led the French to a series of victories against the English — and managed to do this without even the advantage of being of noble birth or male.
Royal Navy Midshipmen did start off at age 12 or so. They could be expected to command men, men 20 years older, as needed, being in the chain of command. This hasn't changed that much in some ways. Officers in their early twenties nominally outrank senior NCOs probably old enough to be their fathers, or sometimes mothers these days, though for the first couple of years they're still considered to be in training and don't have much in the way of real authority. Alleviated somewhat in that officers are supposed to specialize in knowing what to do, and NCOs are supposed to specialize in knowing how. Hence the old saw about the three words that will make a lieutenant into a General being "Carry on, Sergeant."
Speaking of the UK Armed Forces, they're one of the few countries who still accept 16-year-olds as enlisted recruits, though one has to be over eighteen to be deployed overseas. There's been some talk of raising these limits due to some worrying reports about younger soldiers being more vulnerable to PTSD.
War tends to do this. The average age of the entire US Armed forces in WWII was 26, but there were entire units where no one (up to and including the CO and senior noncoms) was older than 30. Improbable age promotions mostly tended to happen in specialist units like the commandoes, paratroopers, and air forces where being young enough to withstand the physical demands was an asset; the youngest U.S. General in World War II was 36-year-old paratrooper James "Jumpin' Jim" Gavin. And sometimes Field Promotions just happen to stick after the battle.
- WWII editorial cartoonist Bill Mauldin acknowleged this in "Uncle Willy", a cartoon showing a youthful Captain embracing his uncle, a middle-aged infantry private.
- Revolutions amplify this; while this happened from time to time under the ancien régime, with Rocroi being won by a 21-year-old duke of Enghien (a member of the house of Bourbon), Napoleon himself was 24 when he became a general, gained command of the Italian theater of war at 25 and was 27 by the time the Italian campaign ended. Some of his marshals were equally young when they became generals in the republic; about half of them were colonels in their 20s, general officers at 30 or so, and the youngest of the marshals, Davout, got the baton at 34.
- Towards the end of World War 1 boys as young as 13 were being enlisted into the army in the U.K because they were running short of draft-age men who could be spared from their civilian jobs. (To put it in perspective, out of approximately twenty million male British citizens at the time, five and a half million had been drafted and one million had been killed in action by the end of the war.) Offically the age limit was 18, but the recruiters didn't have the luxury of asking too many questions.
Dwight D. Eisenhower is an interesting case: In WWI he was quickly promoted from Lieutenant to full Colonel and placed in command of the entire US Tank Corps. (His demotion after the war ended was even quicker but they gave him a capitaincy as a consolation prize.) He'd only just made his way back to Colonel by the time WWII broke out but once the US entered the war he was once again quickly promoted (over the heads of many more senior officers) to command Allied forces in Europe.
Major General James M Gavin, commanding general of the 82nd Airborne Division, was appointed to his role at the age of only thirty-seven when most men of the same rank in both the US military and from other nations were decades older, making him the youngest US general to command a division during World War II. Critics even took issue with the casting of thirty-year old Ryan O'Neal to portray Gavin in A Bridge Too Far, claiming him as far too young, when he was about the same age.
Billy Connolly did a bit on about a 22-year-old Feng Shui expert; "When you're twenty-two you're not an expert on any-fucking-thing!"
Not as incredibly young as most on this page, but Thomas Fairfax became the senior officer in command of the Parliamentarian army during the Three Kingdoms Wars (British Civil Wars) at the tender age of 33. Admittedly the war was conducted largely by people with no prior experience of warfare so anyone talented enough would rise high quickly. It helped that he was also politically acceptable and convenient, less politically minded and more malleable than his elder subordinates Henry Ireton and Oliver Cromwell.
William Pitt the Younger was Prime Minister of Britain at the age of 24. It probably helped that his father previously held the position, but this didn't stop him losing a vote of no confidence in the House of Commons on account of his age, and ignoring it. He would eventually stay Prime Minister for the next 18 years.
Wolfgang Amadeus Mozart was a virtuoso musician by the age of four, and was composing small pieces by the age of five. Though he zigzags the trope as he didn't write any of the pieces he is remembered for until well into adulthood.
Fryderyk Chopin's pieces were being published when he was seven and he was being celebrated as a composer.
Chess player Garry Kasparov became a master at 14, a Grandmaster at 17 and then the world champion at 22!
Hou Yifan won the Women's World Chess Championship when she was 16 years old. She achieved the title of Woman FIDE Master at the age of nine.
Many boxers and other fighters become professionals before they are eighteen with Mike Tyson becoming heavyweight champion of the world at only twenty years old, making him the youngest ever to achieve such a title.
Mary Shelley, S.E. Hinton, Georgette Heyer, Gordon Korman and Christopher Paolini all had novels published while still in their late teens.
Emily Grace Reaves started her own clothing line, the Emily Grace Collection, to be sold by Ooh! La La Couture, at the age of eight.
Tavi Gevinson was 11 years old when she began her own fashion blog. By age 13, she designed shirts for a London label. The next year, she became a contributor to Vogue, and by 2011 she had launched Rookie, an online publication for teenage girls.
Évariste Galois, one of the greatest mathematicians of all time, started reading doctoral-level maths books like novels while at school, was rejected from France's top mathematical institution because the professors weren't clever enough to understand his work, invented a new and monumentally important branch of mathematics while in prison for revolutionary activity and died aged twenty in a duel over a girl.
Cracked presents the "5 Shockingly Powerful Kids Who Make You Look Like a Coward." It begins with Johnny and Luther Htoo, twin Child Soldiers who successfully defended their village on their own from an invading army before quickly becoming the leaders of God's Army at the age of nine. It ends with Iqbal Masih, an 11-year-old who escaped slavery and became spokesman for the Bonded Labor Liberation Front (a group dedicated to freeing child slaves), liberating 3,000 children before he was assassinated at the age of thirteen because of his worldwide-renowned fight against child labour. Geez, they make the achievements of several fictional examples look puny in comparison.
Friedrich Nietzsche at the age of 24 became the Chair of Classical Philology at Basel University. He did not have a Ph.D. and hadn't even completed his doctoral dissertation. He was given the chair almost solely on the recommendation of the philologist Friedrich Ritschl, who had never taught a more talented philologist than Nietzsche. Nietzsche is still the youngest person to have ever held this position.
There's a belief that the great theorists (mainly in physics and mathematics) make their most ground-breaking discoveries before the age of 30, and work they do after is of lesser importance or merely an elaboration on their early work.
The younger generation of English Romantics are somewhat renowned for their short, intense lives: John Keats died of tuberculosis at 25, Shelley was lost at sea a month before his thirtieth birthday and Byron made it all the way to 36 before contracting a fatal fever fighting in the Greek War of Independence. All three of them are firmly established as some of the greatest poets of the English language. This also applies to some famous German writers of that era, for instance Christian Dietrich Grabbe (1801-1836), Wilhelm Hauff (1802-1827), and Georg Büchner (1813-1837).
Carl von Clausewitz started his military career when he was 12 years old as a lance corporal, got on the first battlefield when not yet 13 and had it cut short by cholera 39 years later as a Major-General. When he began to write On War, he mused that out of 26 years of life by that point, he had spent more than 11 doing war and nothing more.
Nazi Germany became so desperate for soldiers by the end of the war that they had children who hadn't yet reached puberty put on the front lines.
Adolf Galland commanded Luftwaffe's fighter force at the age of 29.
Rob Bottin became a movie special effects artist when he was 14.
Buster Merryfield only began acting when he reached retirement age, and went on to become a main character in Only Fools and Horses.
Allan Reinikka pole danced on Australia's Got Talent at age 62. He reportedly took up pole dancing about a decade earlier.
Orson Welles was 24 when he directed Citizen Kane, arguably the greatest movie of all time.
Bob Clampett and Frank Tashlin were 23 when they became cartoon directors.
Mikaila Ulmer started up her own brand of lemonade, BeeSweet Lemonade, based off of a family recipe that called for honey and flaxseed as sweetener. She appeared on Shark Tank, got a $60 000 investment, and got her lemonade sold at Whole Foods. She's 11 years old.
Formula One driver Max Verstappen won his first race at the age of 18. The next youngest at that time, Sebastian Vettel, was 21 when he won his first. Max also holds the record for the youngest driver to test a Formula One car in history. His first test came just three days after his 17th birthday.
Another Formula 1 driver, Andrea Kimi Antonelli, became the third youngest F1 driver ever when he joined in 2025 at just 18 years of age. He started breaking records, won five back-to-back races, and is currently leading the championship by a 41-point margin in his second season in 2026 at just 19 years of age. His first win in China made him the second youngest F1 race winner, behind Max Verstappen himself.
World Rally Championship driver Kalle Rovanperä won his first podium under the top-level WRC category at the age of 18, and in 2021, he dethroned then-current record-holder and fellow Finn Jari-Matti Latvala (who won at 22 years old) for the record of youngest driver to win a WRC event when he won the Rally Estonia at just 20 years old.
In many hereditary monarchies there have been instances where teenagers, children, and even infants ascended to the throne, although regents would actually govern in the underage monarch's name until they came of age.
- Poor John I of France lived for a mere five days after he was born (November 15–20, 1316), but he was still technically King of France during that time.
- Mary, Queen of Scots, received her title when she was only six days old.
- Legend has it that Shapur II of Persia (309-379) was crowned while still in his mother's womb.
- King Tutankhamen, better known as King Tut, became pharaoh at the age of eight or nine, ruled for around nine more years, and then died without even reaching his 20s. His coronation outfit was a child-sized tunic with little multicolored duckies embroidered on it.
Jim Shooter sold his first stories to DC Comics when he was just 13 years old.
Gerry Conway became the writer of The Amazing Spider-Man at the age of 19.
Audie Murphy earned the Medal of Honor when he was 19.
Figure skaters are generally this, starting training as small children and competing their way up from the juniors to senior-level skating, and retiring at an age when most people are thinking seriously about their career. However, from the men's singles discipline we have Yuzuru Hanyu as an extraordinary example: Since he began skating at the age of 4, he's racked up 12 gold medals (including 2 consecutive Olympic ones), 19 broken world records (many of which are his own), become the first skater to successfully land a quadruple loop in competition and is gunning for the quadruple axel (a highly difficult jump which no one has landed in competition) in addition to the quintuple jump, to the pride and exasperation of his coaches/fandom — as he's gotten enough injuries to make a physiotherapist cry, and been in surgery (during which he found out he's allergic to alcohol) after a crash with Yan Han. He's the first male singles skater to achieve a Super Slam, having won all major competitions in his senior and junior career. He's been awarded with medals and honors from the Japanese government as well. At the age of 25 (at this time of writing), he's considered one of the best, if not the best in figure skating history, a consummate skater who combines technique and artistry, and The Dreaded to his competitors (especially people who have to skate directly after him in a competition).
The Olympic Games have a few sports that are bound to be full of teenagers, namely the ones demanding flexibility such as gymnastics and diving. And yet the debut of skateboarding in the 2020 edition had four of the six female medals won by 13-year-old girls (the other two were 16 and 19; by contrast, none of the male medalists were minors). On the opposite side, less physically demanding sports such as equestrianism and shooting can have very senior athletes, with Canadian rider Ian Millar, who appeared in a record 10 Olympics, winning his only medal at 61.
Manchester actor Dan Jillings was previously a police officer, and was in fact the youngest policeman in the Greater Manchester Area at the time. He was eighteen.
Swedish Greta Thunberg became one of the most influential environmental activist at 15 and the youngest Time Person of the Year at 17 and got two nominations for for Nobel Peace Prize.
Huo Qu Bing was a famous general of the Western Han dynasty. He spent almost all his life battling the Xiongnu and winning decisive battles. By the time he died he was one of the most decorated military commanders in Chinese history. Oh, and did we mention he died when he was only 23?
Another famous Chinese military leader was Princess Pingyang, also known as General Zhao. She raised and commanded her own army to capture Chang'an and help her father seize power. When she died she was given a grand military funeral, something no other woman had been given before. Her exact age is uncertain, but like Huo Qu Bing she died in her twenties.
Princess Pingyang's brother Taizong of Tang was only in his late teens to early 20s when he consolidated Tang rule by taking part in several major campaigns to reunify China, and was the most highly honoured commander at 23.
Gao Chang Gong was one of the greatest generals in all of Chinese history. His most famous feat was defeating an enemy army of 100,000 with his army of 500 — a feat he accomplished when he was 23,^note and he was already a distinguished commander by that time.
Ketevan Andronikashvili was only 24 when she personally led 300 cavalrymen in the Battle of Ghartiskari, won the battle, and was greeted with full military honours when she returned to Tbilisi.
Xun Guan led a group of soldiers out of a besieged city, fought with the besiegers, and brought news of what was happening to an official who was able to send reinforcements. She was 13 when she did this.
Tennis prodigy Tracy Austin began training at three, went pro at 15, and became the world's youngest US Open champion at 16.

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