"They say all teenagers scare the living shit out of meIn their strain to try and be taken seriously, teenagers are susceptible, gullible, and downright dangerous to anyone who wants to manipulate them. They are the best targets for demons, vampires or The Virus. Sometimes they're just delinquents with no respect, but are only a hair's breadth of sanity from shooting up an entire classroom, especially if you call them Just a Kid. Much of this trope is fueled by a distrust in teenagers by the adult population. Not to mention, many parents of young children dread the moment when their innocent little angels become sassy, hormonally-imbalanced drama-magnets. However, television producers are often worried about offending the very lucrative 13-to-27-year-old market, so we'll usually see that the heroes are also teens, or at least there will be a very "good" prominent one. Ironically, the much milder version of this trope occurs with shows aimed toward younger children, who find teenagers cryptic, pushy, and intimidating for other reasons. Some cases of Royal Brats can be attributed to this trope. This trope may also be lampshaded further still by invocations of how the teenage monsters in question used to be sweet kids. If teen monsters run society, it's a Teenage Wasteland. See also Big Brother Bully, Kids Are Cruel, and Humans Are Bastards. Some teens act this way because they don't know any better. Some others however do, know they will get away with it because of their age, and might have For the Evulz as their main motivation. Whatever the reasoning, the results are basically the same. Of course this can be, on an individual basis, Truth in Television (ask any High School or Middle School teacher); there are monster teens in Real Life in the same fashion that we can find some mean kids and cruel adults. The mere fact of being a teenager doesn't make people automatically good or evil; it does, however, make any given person more susceptible to reckless or selfish behavior than they otherwise would be as an adult, for biological reasons.
They could care less as long as someone'll bleed"
They could care less as long as someone'll bleed"
— My Chemical Romance, "Teenagers"
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Anime & Manga
- Mohiro Kitoh's manga tend to take a very dark view of teens and tweens. The best example would be Narutaru, in which strange creatures called "dragonets" partner up with certain children, most of whom have issues with the way the adult world works, conferring upon them considerable power. Unlike other Mon-themed manga where that power would be used to protect Earth from alien or supernatural threats, many of the children become the threat themselves, turning their dragonets on each other and the adult world with horrific results. Also, as Hiro-chan's arc shows, those without dragonets have the potential to be monstrous as well.
- AKIRA manages to both play this trope straight and deconstruct it. Whilst Kaneda and his gang are portrayed as teenagers that have little regard to the law, they are also shown as having a sense of honor (though it is small), particularly with Kaneda's feelings toward the death of a friend (in both the anime and the manga). By the end of the series, they actually manage to revitalize Japanese nationalism.
- The teenagers in Battle Royale are forced to become monsters and kill each other. Some take quite easily to this new role, others never do.
- Death Note:
- Light Yagami. He starts committing genocide on the criminally convicted at the tender age of 17.
- Mello, too. He runs away when he's almost 15 years old, and when we see him again at 19 he's running the mafia with an iron fist.
- Great Teacher Onizuka: The lead character is homeroom teacher of a class full of bullies, blackmailers, manipulators and scheming sadistics that hate all adults and believe that it is their mission turn every teacher they are given crazy, depressed or suicidal. However every delinquent is given a Freudian Excuse and a Backstory explaining their behaviour and how they became "damaged goods".
- While not necessarily teenagers, most antagonists in Yu-Gi-Oh! were in their early twenties or earlier when they started out, and were at that age once the feces hit the fan. There was Pegasus at age 22 when we first saw him, there was Malik/Marik who was a mere 16 when we saw him (and who had started down the path of evil before entering puberty), and Dartz who started at only age 21, and kept himself that way for who knows how long, and Yami no Bakura, who probably wasn't more than 20 in the original timeline. To say nothing of all the other minor antagonists over the course of the story that were never older than 25, teenagers must get a horrible reputation in their world.
- Prior to Duel Monsters taking the priority of the series, Yugi went through a whole series of teenage monsters every chapter in the manga, Seto Kaiba being among them.
- This didn't stop at the first series either. In GX, the majority of antagonists of the day were fellow teen schoolmates, the chief antagonists of season 2 were all early 20s or younger, and season 3's subplots and season 4's plot were all ultimately instigated by youngsters.
- Avoided in the third series Yu-Gi-Oh! 5D's, mostly. While Aki is only 16, and goes on to terrorize Neo Domino as the Black Rose Witch and gets called a monster until her Heel–Face Turn, that is, all of the Dark Signers are adults.
- Lampshaded in Digimon Adventure by Gotsumon and Pumpkinmon, despite the fact that teenagers are usually minor characters. Made better by the fact that the Digimon are, well, monsters in the literal sense.
Gostumon: Woah! I think you knocked over a monster!
Pumpkinmon: Even worse! I think I knocked over a teenager!
- All the contestants in the tournament in The Law of Ueki are supposed to be junior high students. Yet, many of them do not mind using their powers to Take Over the World, and apparently don't have any qualms about killing their opponents.
- Strongest Legend Kurosawa uses this a lot, and at one point even compares them to animals.
- Miki from Aishiteruze Baby gets bullied by her classmates after she walked in on her teacher and her teacher tells everyone else "Pick on Miki. Get grades". Granted, one could make the claim that it's the teacher who's monstrous, but the classmates still went along with it.
- It was a little more complex than that. Miki went to an extremely competitive school and saw a teacher beating up a fellow student for getting a low grade; the teacher left off with "Tell everyone you fell." The teacher never notices her, but Miki talks with her peers about it, none of whom are willing to tattle. One day, though, some of her classmates pull out an exacto-knife, hold Miki down, and go all-out on her, saying that they wondered what it was like to hurt someone else for once. It starts with the teacher and how he treats them, but he has no part in what the students do — he neither goads them into hurting anyone or suggests they do, and has no knowledge it's going on; it's all their own decision.
- Arisa (actually her twin sister Tsubasa in disguise) has been ostracized, drugged underwater, beaten, and pushed off a cliff, among other attacks by her classmates, because she's trying to find the "King" who has an almost hypnotic hold on her sister's class. Tsubasa/Arisa's friend who previously lost faith in the King was ostracized and Driven to Suicide and is now paralyzed (it appears to be psychosomatic), but after finding out about Tsubasa being Arisa, she beat Tsubasa's aunt unconscious.
- Mikado no Shihō: You realize that Rinshō is this once his older brother Emperor Sōun "Shiki" is revealed to only be 17 years old.
- Glemmy Toto of Mobile Suit Gundam ZZ is a 17-year-old Ace Pilot and The Starscream to Big Bad Haman Khan who gets up to some truly nasty stuff over the course of the first Neo-Zeon War, eventually forming his own faction. Whether he's a Smug Snake or a Magnificent Bastard is a matter of some debate amongst the fandom, but the fact that he's a serious problem, despite his youth, is not.
- Carris Nautilus of After War Gundam X is a 15-year old boy who is willing to use increasingly extreme measures to bring the world under control. He eventually wises up. Shagia and Olba Frost, on the other hand, a pair of 19-year old Ace Pilots do not, and their Wangst over how unfair life is treating them nearly triggers an utterly devastating war.
- Shinn Asuka of Mobile Suit Gundam SEED Destiny is hardly evil, but as a young, impressionable, and emotionally damaged teenager he easily falls victim to Chairman Durandal's toying with his emotions, and is used as the Chairman's attack dog for much of the show.
- School Days anime involves a number of teenagers doing false "dating practice" with sex, betraying, harassing, blackmailing, cheating, avoiding responsibilities, raping, and murdering.
- Explored in Attack on Titan, thanks to the series' focus on Child Soldiers and how sometimes Humans Are Bastards. While most adults commit horrible acts fully aware of what they are doing, many of the 104th Trainee Corps express callous attitudes or commit cruel actions because their inexperience or emotional immaturity.
- Eren is downright terrifying, thanks to his Unstoppable Rage and his past as an Enfant Terrible, often leading him to make decisions that has negative consequences on him and others.
- Mikasa is obsessively attached to Eren and she has become suicidally reckless when he is in danger. She has flat out stated before that she will hurt and even kill anyone, whether Titan or human, that stops her from getting to him and only cares about Eren and to a lesser extent, Armin.
- Jean is callous when his hometown of Trost was being attacked, complaining he was one day away from joining the Military Brigade and leaving the whole mess behind. His attitude changes after the battle.
- Before enlisting, Sasha hated the refugees from Wall Maria for the famine her village suffered through and believed outsiders shouldn't be helped. Her father challenged her to enlist and change her selfish attitude.
- Krista was willing to get herself and Daz killed, all for the sake of dying heroically. Ymir calls her out on this.
- Reiner, Bertolt, and Annie might be incredibly tragic, but they're still responsible for the events that killed off 20% of the human population. While their motivations remain unknown, all three are incredibly ruthless when it comes to accomplishing their mission. Reiner claims they didn't know anything when they began their mission, and all three definitely feel remorse over their actions.....but their youth, relative inexperience as spies, and unstable emotions combined with their power makes them an absolute nightmare.
- Ymir is incredibly callous and calculating, thinking only of herself and the girl she loves, Krista. She's unapologetic in weighing the lives of the people around her against her personal goals, and leaves everyone around her uncertain of her true motives or goals. She admits to being a horrible person, willing to risk Krista's future just to see her one last time and emotionally manipulates her. Unlike her peers, she's painfully aware of just how much of a screwed up person she is, and keenly aware of how messed up everyone else is as well.
- Highschool of the Dead is so prone to this, not even the good guys are immune. Takashi Komuro, Saeko Busujima, Kohta Hirano, and Red Shirt Misuzu Ichijou are just a few examples.
- Life has a plot that revolves around high school bullying. It begins when Ayumu's best friend ruins their friendship because Ayumu got into a school but not her. This leads to Ayumu to start cutting. Ayumu befriends a popular girl named Manami, however after believing she's cheating with her boyfriend (who is a Jerk Ass who sexually harrasses Ayumu) she goes into extreme Alpha Bitch mode. It turns out Manami is a huge bully with an equally mean Girl Posse. Manami does everything from trying to feed Ayumu needles, trying to murder her, and making another girl so scared she jumps from the school balcony. Ayumu isn't the only one who suffered throughout the series though. Her crush was severely bullied in middle school and has cigarette burns all over his arms from the bullies.
- The characters in Zekkyou Gakkyuu are schoolchildren... who, more often than not are willing to resort to murder to save their own hide, or to get rid of a rival. Bullying also happen with great regularity, and can get outright vicious.
- Blood+ has Diva. She is an old vampire, but she looks like a young girl. She kills people only for fun, and laughs when she has massacred. Later in the anime, she also rapes her sister's adoptive brother, only to harm her.
- In Claymore you sees several female Awakened Beings, which have the outward appearance of young girls. All right, man-eating monsters look like female teenagers. The most famous examples are Priscilla, Riful, and the female Awakened Being in the area of Gonahl. And all three of them had a single-digit rank as warriornesses.
- Future Diary has the classmates of Ai who arrange a group rape for her because they do not like her. Her friend Marco comes too late to protect her, but he can kill the boy who raped her.
- Tsubaki, the Order's High Priest, also qualifies for this. She is cruel and evil, and wants to let Yuno also rape. However, she was also a victim of sexual abuse.
- And above all, Yuno also counts. She is a 14 year old, nice looking girl. But this is just a façade. In fact, she is a psychopathic serial killer who has developed an obsession to an innocent boy, killing everyone she believes she stands in the way of her and Yukiteru.
- In Higurashi: When They Cry there is a group of six friends, each of whom becomes an murderer in an Arc. In her village, there is a dangerous pathogen that makes the people insane and aggressive.
- In the Arc with Keiichi, the boy believes that the village murdered two people each year, and he is the next to be in line, holding Mion and Rena for the guilty, killing them eventually.
- In another Arc, Shion believes that a demon possessed her, and would drive her to act violently. She kills several of her friends, and a large part of her family. It is even implied that she is trying to rape Keiichi.
- In another Arc, Keiichi notices that his girlfriend Satoko is being abused by her uncle, and kills him shortly thereafter. His friends notice this, and try to give him a false alibi.
- Then there is another Arc in which Rena perceives that her father is threatened and blackmailed, whereupon she kills those who do him this. And this is only the beginning, because she believes she is being persecuted by a mysterious organization to which Mion belongs, and finally takes all the students of her school as hostages.
- In another Arc it is implied that Shion kills Satoko's uncle because he abuses her.
- In manga there is an Arc in which Mion falls in love with Keiichi and becomes a kind of Yandere and kills all the girls Keiichi could fall in love with instead of her.
- Then there is another Arc in the manga where Keiichi, Shion and Rena kill together.
- Even Rika becomes a murderer in the manga.
- In the graphic novel Black Hole, teenagers are being afflicted with a mysterious STD that causes them to mutate randomly, occasionally turning them into literal monsters: barely human creatures that live in the woods. At least some of them seem to have become significantly mentally deranged because of this, turning them into more traditional monster teens.
- Superboy-Prime of The DCU. In reality, he's just a teenager that had a serious mental breakdown. With all the immaturity and angst that implies.
- This was America's prevailing attitude towards Young Justice in The DCU, causing them to eventually become America's most wanted super-group, despite the fact that they were actually pretty heroic and set a good example for others like them.
- The X-Men and other Marvel mutants. Most mutant powers seem to manifest around puberty, and turn their recipients into freaks or outcasts of some sort. Rule of Symbolism much?
- One incarnation of the Hellfire Club are all teens at just about 12.
- Elizabeth of Gemini Storm was recently revealed to be one of these, spending her teen years in juvenile hall and mental hospitals until government funding ran out from the quarantine and the institutes closed down.
- Terra I from the 1980's "Judas Contract" arc of The New Teen Titans is a perfect example; while she initially joins the team as a hero, it is eventually revealed she's a sociopathic, emotionally unstable mercenary who deliberately joined the team as The Mole on behalf of the vengeful assassin she's sleeping with. She gleefully turns on them at his say so and almost gets them all killed, only stopping when she believes he's been cheating on her and lashes out, accidentally killing herself in the process. Unlike a lot of DC villains, over the years writers haven't made her that much more sympathetic than she was originally.
- The League of Extraordinary Gentlemen has a teen react to being told he's the Antichrist by raping and/or murdering his friends, schoolmates and teachers before spending the next few years of his life in seclusion before being curb-stomped by Mary Poppins. This infamous paragon of violent sociopathy and seething hatred is none other than Harry Potter.
- The police procedural action strip Dick Tracy has a few teenage villains.
- Jimmy White is an angsty seventeen year old who robs banks as well as his father, attempts assassinations, and acts as a cohort to major 30s villain Ben Spaldoni, who in turn worked for the Big Bad of the decade, Big Boy Caprice. He later explodes in an oil tank trying to kill another person. For a young kid that's pretty twisted.
- Flattop Jones, Jr. committed at least two murders and led Tracy on a manhunt while trying to kill the aforementioned protagonist as well before getting killed. Considering this kid is the son of Flattop Jones, a mass murderer, hitman, and child killer, this is not unexpected of him.
- Downplayed with Jeremy Duncan of Zits; he certainly doesn't respect his parents, but often he's more an example of Youth Is Wasted on the Dumb or Dumbass Teenage Son.
- Calvin and Hobbes: Calvin would say his Babysitter from Hell Rosalyn is one. She's not really, though, and even deals with Calvin fairly well.
- An unusually serious and dark CATverse story, The Pæan of the Bells, gives us a flashback to The Scarecrow's incredibly shitty childhood. A group of teenagers enjoyed hunting him down daily, beating the crap out of him, verbally abusing him, and more, purely For the Evulz. He was terrified that he might just be killed sooner or later, and the kicker? They weren't doing this to somebody their own age or anywhere near their own size; Jonathan was still a little boy. Not surprising that he grew up to be a villain.
- The Megamind fanfic Heroes makes it clear just how cruel and uncaring some teenagers can be compared to others. In some places the cruelty is shockingly realistic.
- During the section set in 1996, Redaction Of The Golden Witch focuses on a group of Witch Hunters. The three younger members are all twenty-somethings, and much of the conflict revolves around the significantly older Narrator getting frustrated with the trio's apparent Lack of Empathy. Each of the three is so wrapped up in what they enjoy most about the Witch Hunt fandom that they don't seem to care about the fact the Rokkenjima Incident was real, with real victims whose memory they're insulting.
- In The Racket-Rotter Chronicles, Lolly acts very mean and cruel, taking it out mainly on her brother Shark. In Arc 3, she goes as far as to inflict Cold-Blooded Torture on him.
Films — Animation
- The unused Frozen song "We Know Better" has implications of this. It's from an early script where Elsa is a Tragic Villain. Growing up Anna was popular with locals while Elsa was feared for her powers. One portion has a teenage Elsa and Anna out with some of Anna's friends. Elsa says the kids are jerks but Anna tells her to relax and be friendly. One boy calls Elsa a "freak" — something that's happened before — and Elsa gets mad and attacks him.
Anna: Try to be friendly, just smile and say "hi". Don't be defensive look them in the eye.
Elsa: Those kids are jerks.
Anna: I know it's hard but your temper makes it worse. They don't understand... your gift.
Elsa: Yeah, they think that it's a curse.
Elsa: They want me to stay mild and meek. I'm s'posed to turn the other cheek. But if one more kid calls me a...
Elsa: Wait for it—
Anna: [spoken] Elsa, what did you do? I'm so sorry!
Anna: [whisper to Elsa] You should know better.
- A relatively mild version in Superman Unbound, which suggests that Supergirl has the powers, but not the maturity or restraint, of her older cousin.
Films — Live-Action
- In Madea's Family Reunion, the teens and young adults at the titular reunion are called out on their bad behavior, which included gambling, dressing inappropriately, and gyrating on each other.
- Any movie based on Columbine, including Zero Day and Elephant.
- Taken Up to Eleven with the Estonian film Klass, where the shooters are constantly and horrifically tortured psychologically and physically by their classmates.
- Japanese film The Warped Ones. Akari and Masaru are thieves and rapists. Their partner and Masaru's lover Yuki is a hardened prostitute. They delight in tormenting Fumiko, the woman Akari raped, and her spineless boyfriend Kashiwagi.
- Teenage Mutant Ninja Turtles (1990) used disaffected youths to form a thieves' guild.
- From Mystery Science Theater 3000: Kitten With a Whip, I Accuse My Parents, The Sinister Urge, The Violent Years, What About Juvenile Delinquency (short) and Teen-Age Strangler strangles teens, but is actually an adult
- Welcome to the Dollhouse.
- Eden Lake takes this to a truly disturbing level.
- Battle Royale takes this to an extreme. After children in Japan start refusing to go to school, the government starts kidnapping entire classes of teenagers, putting them on an island, give them guns and other weapons, and tells them to all go kill each other, last one alive gets out free. Many of the teens, instead of fighting against the government, see this as an opportunity to wreak havoc, and start mercilessly killing off their classmates.
- Most of Larry Clark's films; Bully, Ken Park, Kids and The Smell of Us practically all run on this trope, often in a nihilistic and sensationalist exploitative manner. Ken Park features a teen stabbing his grandparents and getting an erection from it.
- A big part of Brick.
- Similarly, the film Kidulthood, being centered around the troubled youth of urban London, feeds off of this trope - even a fair few of the protagonists are pricks to some extent, while the main antagonist is a towering Jerk Jock who batters his girlfriend and shows no visible regret at leading a bullying campaign against a girl at school which ultimately drove her to suicide. Combine this with the film's other underlying theme of Adults Are Useless, and you get a pretty bleak movie.
- Murder by Numbers, what with its vague inspiration from the Leopold and Loeb case.
- The first two Pumpkinhead movies, with Pumpkinhead II: Blood Wings having you want the titular monster to slaughter every teen we meet in the movie.
- The feral chavs terrorizing the Council Estate in Harry Brown.
- Subverted by the kids in Attack the Block, who are first shown mugging a woman but become heroic after they team up with her after aliens attack.
- The Pioneers in Scarecrow who traumatize Lena and her grandfather, driving them to madness and out of town.
- The '50s was rife with films with this at it's core with titles like "18 And Anxious". Rebel Without a Cause came in and set it straight.
- The Texas Cheerleader Scandal: A Lifetime movie which was based on a true story.
- Odd Girl Out: Another Lifetime Movie. In this one, the protagonist is bullied both inside and outside of school to the point where she cuts off her own hair (after the other teens say her hair is too frizzy) and overdoses on sleeping pills. Even after her attempted suicide, the kids would not ease up on her. They posted a video of her being wheeled into an ambulance on a hate page that was dedicated to her and called her a "pathetic druggie".
- Another Lifetime Movie called Terror In The Family centers around a teenage girl (played by a young Hilary Swank) acting violent towards her family. She even goes as far as to breaking her father's hand. We learn throughout the film that she's mostly doing this to impress her rebelious boyfriend, who is ten times worse than her as he once punched a teacher.
- Thirteen: With all the drug usage, underage drinking, underage sex (and numerous other illegal acts) that goes on in this movie well... lets just say this film is a parent's worst nightmare on what will happen when their sweet little angels become teenagers.
- The events of the 2008 film Red are kicked off by three teenagers mugging an old man, then shooting his dog For the Evulz.
- The Last Exorcism's Caleb is rather creepy and antagonistic and is actually a member of a demon-worshipping cult. His younger sister Nell, who's possessed and going to give birth to the demon, might be in on it too.
- The Class (2007) is a brutal and realistic look at the effects of teen bullying. And how a whole class of students can gang up on an individual.
- Mark James and his gang from I Am Number Four.
- Downplayed in Where the Wild Things Are: Claire's friends don't wreck Max's snow fort out of malice but out of playing too hard for the smaller kid. They even look genuinely upset when they realize what they've done — but are much too self-conscious to apologize.
- Kimmy and her group of teenage purgers in The Purge: Election Year full stop. Namely, Kimmy uses the excuse of not being able to shoplift a candy bar to burn down a store and murder everyone inside. And Kimmy brags about murdering her parents on top of it. They are all killed without mercy, thankfully.
- The Boy 2015 has an example in the form of the teens who stay at the hotel one night. When Ted who is all of nine years old is found spying on one of the drunken female teenagers, the rest of them throw him outside, beat him and soak him in liquor. It serves as Ted's Despair Event Horizon.
- Never Been Kissed. Even though the film is mostly a comedy, the teenagers there are shown to be quite jerks; they stole Josie's car on her first day at the school and then watched on in delight while she tried to find it (and it was told to her that that wasn't the first time they did it), refused to sell a girl a prom ticket because she wasn't popular enough, tried to pour dog food on said girl at the prom and the boy that Josie was into (the student, not the teacher) deduced that she was a loser based on her bedroom. Oddly enough, in spite of this behavior towards her, she eventually was able to be accepted by the students and gleefully hung out with them.
- Jodee Blanco's memoir of recovering from intense bullying, Please Stop Laughing at Me, turns both this and Kids Are Cruel Up to Eleven. A group of kids Jodee was friends with in a new town fall out with her after she refused to play a prank on a disabled teacher. They then come back to her over the summer, invite her to play baseball, then knock her out with a fastball, moon her, and call her a variety of names. Not only that, her crush wrote "You're going to have to fuck yourself bitch" in her yearbook, gets beaten up by the entire football team, and is made fun of when word gets out that one breast is smaller than the other, and that's not even the half of it.
- We Need to Talk About Kevin: Kevin is a sociopath who committed a massacre at his school and is revealed to have also killed his father and sister as well. Whilst his mother seems convinced there was something very wrong with him from a much earlier age, he planned the attack very specifically to occur on the last day that he could be guaranteed trial as a juvenile.
- Speak has Melinda's classmates. Heather jumping ship on her. Those kids at the pep rally. And Andy Evans who raped her.
- A Clockwork Orange in all its horror show entirety.
- Figures rather prominently in many novels by Stephen King - one almost suspects King believes Teens Are Monsters himself. (Well, he did teach high school for several years.) Among other examples, we have:
- Todd Bowden from Apt Pupil, the second novella from Different Seasons. Todd learns that his elderly next-door neighbor is a Nazi fugitive, but doesn't turn him in because he wants to learn the "gooey stuff" about the Holocaust. As his Odd Friendship with the Nazi continues, Todd graduates from dreaming about raping concentration camp inmates to becoming a hobo-mauling serial killer. Finally, Todd kills his guidance counselor and snipes motorists on an expressway.
- Buddy Repperton in Christine. Arnie Cunningham doesn't qualify quite so much due to the whole Demonic Possession thing.
- The Children of the Corn, along with Creepy Children.
- Junior Rennie and his posse in Under the Dome. Three of them rape a girl while the only female member of the posse cheers them on, and Junior repeatedly has sex with the bodies of two girls he murdered and stuffed in a pantry.
- The teenagers who kill Alice in Cell.
- The Kid in The Stand gives the appearance of this, but is in his mid twenties to thirties.
- Henry Bowers and his friends Victor and Belch in IT, as well as Patrick Hockstetter, whose actions even disturb Henry.
- The girls in the locker room in Carrie, particularly Chris, who comes up with the whole ill-advised pig-blood thing.
- A Song of Ice and Fire:
- Joffrey Baratheon is only 13 years old, yet is regarded by many as the single most depraved character in the series (at least until the below-mentioned Ramsay came along).
- Gregor Clegane was barely in his teens when he burned his little brother Sandor's face after Sandor played with some of Gregor's discarded toys that Gregor didn't even want anymore. Gregor only got worse as an adult.
- Sixteen year old Ramsay Snow also qualifies, given how his main hobbies are flaying and hunting women for sport, and to a lesser extent nineteen year old Theon Greyjoy also counts, although he does bad things less because he's evil and more because he's a stupid kid that gets in way over his head. Of course, that all changes when the two meet...
- In John Saul's House of Reckoning, the main character is crippled from a car accident and the school (and the town) whispers behind her back and alienates her, then accuses her of worshiping the devil. Because she has a limp.
- Saul actually has several novels with outcast teenagers being victimized by their monstrous peers. The Unwanted, Black Creek Crossing and Punish The Sinners are a few examples. Then there's Teri, the glamorous teenage serial killer in Second Child.
- In Andrew Vachss's Burke books the protagonist often passes by disaffected teens who may be violent, though they're rarely the focus.
- Brought up in Discworld, but in typical Pratchett fashion, quickly subverted soon after. The Ankh Morpork teen street gangs are mentioned to be ruthless and deadly... but find themselves helpless to resist Captain Carrot's good-natured effort to organize them all into a Cub Scout equivalent, camping trips and chanting all included.
- Gone, by Michael Grant. Partially justified in that the series uses an Only Fatal to Adults situation and every main character is 14 or 15 years old. On the other hand, there are a lot more villains than heroes, and the "good" characters have issues.
- In The Butterfly Revolution, John Mason rapes one of the female campers, Blackridge tortures Divordich, and Stanley kills Mr. Warren.
- Draco Malfoy from Harry Potter, and his Slytherin cronies.
- The young Tom Riddle is an exaggerated example, who murdered his father and grandparents, framing his uncle. Opened the Chamber of Secrets, killed a girl and then blamed it all on Hagrid.
- For that matter, James Potter and Sirius Black were examples of this trope regarding Snape, at least during fifth year.
- Severus wasn't their only victim. Harry Potter and the Half-Blood Prince revealed that the Marauders got detentions for several acts of bullying and general mischief. One incident involved being one of them being apprehended and using an illegal hex on some one-note student. There's also Sirius trying to lure Severus to Werewolf Remus during a full moon with full knowledge of what Remus could have done to him.
- Snape might be an inversion because, while he didn't even seem to be mean, he had a very dark mind, with his fascination with the Dark Arts and the creation of some violent spells. This is likely what his classmates' perception of him was. However, he did hang out with a group of other Slytherins who eventually became Death Eaters which probably didn't help this perception. Though we never learn much about this gang's activities, they probably fall under this trope.
- And Dudley before the Dementors.
- This is, essentially, the point of Sergey Lukyanenko's Knights of Forty Islands, where a bunch of teenagers are kidnapped by aliens and put on small islands connected by narrow bridges, where they're given anger-activated swords and told that anyone who conquers all 40 islands gets to go home (The Cake Is a Lie, as all "kidnapped" kids are copies). The protagonists decide to make an alliance with the neighboring islands in order to peacefully or forcefully bring all islands under one rule. While it works for a short while, teenage hormones soon take over, and the alliance falls apart, as many of them just want to have power and sex (two of the betrayers are murdered in cold blood by the protagonist after they rape a girl).
- Ashes by Ilsa J. Bick takes this to the extreme. In this Zombie Apocalypse, an electromagnetic pulse has made most teenagers become Technically Living Zombies and killed most adults, thus making the only survivors younger children or elderly people, who both have no problem mistrusting teenagers.
- Some of the teens in The Geeks Shall Inherit the Earth are unnecessarily cruel. The leader of Danielle's hate club actually wishes that Danielle dies from the anesthesia when she goes to get dermatological surgery.
- Lord of the Flies pretty much breathes this trope. William Golding did not have a very sanguine view of the ability of human beings to solve problems without resorting to violence, and showed it through the preteen and teenage characters in the book.
- In The Fire Eternal, teenaged Lucy is not the same kind little girl she was.
- The Scream : The Screamers, rabid fans of metal band The Scream. One chapter ends with a list of the violent acts perpetrated by the fans, all aged 13-17. The characters also discuss Khmer Rouge and one character points out that many of the people involved were around age 14.
- Little House on the Prairie has the oldest boys at Almanzo's school. Because of the time period and the rural environment, it's a mixed grade school. The older boys are sixteen and seventeen year olds who are rarely at school, and usually spend class talking when they are. They steal from the younger students and force the boys to fight for fun. The previous year they ended up beating a teacher so hard he died of his injuries. The new teacher gets them to behave by whipping them.
- The Mortal Instruments has Johnathan Morgenstern. He is a teenage boy, but he is also a strange mixture of shadowhunter and demon. And he leads with his army a war against the shadowhunters, which nearly kills them.
- Buffy the Vampire Slayer.
- Jesse, Theresa Klusmeyer and Harmony got turned into vampires.
- The Pack: Hyaena-possessed bullies. Lampshaded heavily here:
Giles: Xander's taken to teasing the less fortunate?
Giles: And, there's been a noticeable change in both clothing and demeanor?
Giles: And, well, otherwise all his spare time is spent lounging about with imbeciles.
Buffy: It's bad, isn't it.
Giles: It's devastating. He's turned into a sixteen-year-old boy. Of course, you'll have to kill him.
- Marc the Demon
- The Inca Mummy
- The Swim Team
- Pete Clarner
- Vamp Willow and Vamp Xander
- Faith, until her redemption
- Connor in Angel is a perfect example. The bad guys hardly have to break a sweat to manipulate the kid into doing really nasty stuff. Fortunately, he returns in Season 5 as a much saner person, due to having memories of a normal loving family instead of a childhood in a hell dimension.
- The Middle Man plays with this trope. In one episode, it appears that a teenage Stalker with a Crush girl is following her favourite boy band group, opening vortexes in physical space and is about to end the world. Turns out, the girl was a General from another planet, sent here to stop the boy band, who were actually alien terrorists in disguise.
- On one episode of Criminal Minds there is the statement "All teenagers behave like sociopaths sometimes; that's why you can't diagnose them until they're 18."
- In the episode "All that Remains," a teenage girl starts to believe that her mother loved her younger sister more than her. She then murders her mother and then murders her sister a year later, and blames it all on her father, who happens to be an alcoholic and suffering from multiple personalities. JJ soon figures this out and the teenage girl points a gun at her. When Reid and Morgan come to arrest her, she tries to get out of it by claiming that she's suffering from post traumatic stress, but they don't but it.
- Kevin the Teenager in the Harry Enfield and Chums sketches. ("That is SO UNFAIR! I HATE YOU!") However this is more along the realistic lines of making him an unbearable, moody, whining brat who hates everything his parents do or say and is entirely controlled by hormones and current trends.
- In the earlier Harry Enfield's Television Programme, Kevin (also called "Little Brother") was a hyperactive and relentlessly cheerful preteen. The first episode of ...And Chums showed his thirteenth birthday triggering a hideous Transformation Sequence, similar to Doctor Jekyll, in front of his horrified parents.
- The Late Show with David Letterman amplifies this trope to its comic extreme in its Dwight the Troubled Teen skits. At the slightest provocation, Dwight loudly proclaims his hatred for his family and storms off.
- Any episode of Star Trek: The Original Series (TOS) that featured anyone younger than 20 years old adheres strongly to this trope. In no fewer than three episodes (Charlie X, Miri, And The Children Shall Lead) unsupervised youngsters nearly destroy the Enterprise and/or kill the principal characters.
- Trelane, the teenage omnipotent being who'll hunt you down if you ruin his fun.
- Though he was 'born' within the run of the show, Q's son on Voyager was depicted as a teen when he made an appearance. He was also quite fond of making it absolutely clear that A God Am I to anyone who crossed his path.
- In contrast, Naomi Wildman follows the same path of being born during the show's run, but was depicted as a child when she interacted with the crew.
- Averted with characters the writers actually liked. Wesley (TNG) and Icheb (VOY) were stock Teen Genius characters who were generally well-meaning and sociable. Although Wesley was widely seen as The Scrappy by a segment of the fandom (and the Enterprise crew half the time), this had more to do with him bordering on being a Creator's Pet (and, less overtly, an Author Avatar).
- The first couple of seasons of Without a Trace seemed to be dedicated to the idea that teens were vicious amoral beasts who lived to victimize each other. Co-incidentally(?), CSI went through a similar phase about that same time.
- The Sontaran Strategem, an episode of Doctor Who, features a genius teenager as an antagonist whose motivations can be boiled down to being a teenager. However, he came around in the end, sort of.
- Also, he had gathered a large number of other genius teenagers to him who, on hearing his real plan, were appalled and immediately abandoned him. It implied that his plans were less about his age and more that he was somewhat unstable anyway.
- Several Life Time Movies portray any teenager who's not a Naïve Everygirl or a squeaky clean Mama's boy as evil, rotten assholes or bitches who try to corrupt the good kids.
- Early on in Andromeda, the ship docked at a station run by a tribal society of teenagers (everyone died young due to radiation poisoning, so the oldest survivor was sixteen). When the teens gained access to star-destroying bombs, they immediately went out and blew up inhabited solar systems with them.
- The Tribe cast at some point, but particularly the Locos, the Chosen, and the Technos.
- The House episode "The Jerk"'s patient of the week was a teen Jerkass that bullied his mother, insulted everyone he met just for the lulz, and was just a general all around brat (after getting tired of all the tests, when asked for a urine sample, he pissed on the floor). his mother even used the "he used to such a sweet kid till he became a teen" line. House only had his Eureka Moment discovery of the kid's illness by realizing that the kid's utter jerkassedness was NOT a symptom, he was just a teen A-Hole.
- He also said it was probably the mother's fault, which usually is in more real cases of bullying or teenager rebellion.
- Though not all, a lot of the meteor freaks of the week, people who usually go crazy and start killing people on Smallville, are teenagers. Part of that is likely due to the high school/college setting of the first five seasons, but it holds true in later seasons as well.
- Initially an Enfante Terrible, Lx-15/Alexander Luthor plunges headlong into this trope, after he ages to the point where he's in his mid-teens. He attempts to assassinate Martha Kent, Clark, and Earth-2 Lionel, burns down Luthor Mansion, and attacks Tess, his Parental Substitute. Thank god that memory loss, and a Heel–Face Turn set in.
- The Law & Order franchise is fond of this one — if there's a teenager in the episode, this trope trumps even Narrowed It Down to the Guy I Recognize if you're trying to guess the perp at home. Especially if it's a teenage girl. Bonus evil points to a girl in SVU who raped her little sister, convinced her boyfriend to rape her too, gave her an STD, got her boyfriend to kill the sister and another boy to kill him.
- Subverted by the Power Rangers, where every teenager the audience sees ends up being unbelievably wholesome and respectable. Even the bullies and teenage-jerks usually turn out to be decent people when push comes to shove, although once every few seasons, a teenage character plays the trope straight.
- Tommy's brainwashing as the Green Ranger notwithstanding, the few time we see this trope played straight are when one or more of the main characters is cast as a villain or as a brainwashed/corrputed character for most of the storyline, usually ending with a Heel–Face Turn about halfway through the season. Astronema/Karone (in Space), Mara, Kapri, and The Thunder Rangers (Ninja Storm), and Trent (Dino Thunder) are notable examples of this.
- Lampshaded in the pilot episode; the original team is assembled when Zordon looks for "immature, overbearing humans" to fight evil. This was rephrased as "teenagers with attitude" in the opening credit sequence.
- To be fair, Power Rangers rarely shows any evil human, regardless of age.
- Judge Judy is a staunch believer in this trope. To be fair, though, most of the teenagers that appear on the show don't really do much to dissuade her of this opinion.
- Judge Hatchett, a courtroom show that ran from 2000 to 2008, is somewhat of an inversion. Judge Glenda Hatchett tried many cases involving out-of-control teens and tried to get them on the right road through unique interventions, with varying levels of success. Contrary to Judy, Hatchett was an advocate for kids, often saying, "If we want our children to do right, we have to do right by them."
- SCTV did "Nice Kids From Hell", a parody of 1950s juvenile delinquent movies, where a group of clean-cut, polite teens terrorize a middle-aged couple with their pleasant, helpful behavior.
- Subverted somewhat in Teachers, in which the titular teachers, most of whom loathe their jobs, believe this about the teenagers they teach - but their actual interactions with them show that the teachers are more at fault than the teens. However, background events in any given hallway or yard scene do tend to show students casually setting each other on fire or hanging each other out of windows as the teachers walk by obliviously...
- Teen Wolf; literally; that's the whole premise. (Weird, uncontrollable physical changes; mood swings; powerful, destructive, violent urges and thoughts you don't understand and can barely control. Is it adolescence or lycanthropy?)
- Accepted as a truth universally acknowledged in Glee, where it ends up being true at one point or another not just of the general school population but of almost every single one of the teenage protagonists too. So far Mike Chang is about the only one who's escaped it. The trope is taken to its furthest extreme in 2X01, in which Rachel is so jealous of an exchange student's superior singing voice that she sends her to a crack house instead of an audition. It is, however, also deconstructed somewhat with the implication that what lets teens be monsters is adults not doing the job of teaching them better: WMHS has an anti-bullying policy that is not enforced, but Dalton Academy for Boys features an enforced anti-bullying policy and Teens are emphatically Not Monsters there.
- The highschool students attending campus for a program to earn college credits in Community episode The Art of Discourse wont stop MERCILESSLY hounding the cast for going to a community college, when they'll be one day going to universities. Strangely Up to Eleven - many fans felt they were too cruel to be funny.
- Parodied in Father Ted with the teenaged Father Damian, Evil Counterpart to Man Child Dougal. He exhibits all the typical traits (and rebels against the older priests whom he sees as his parents) and his theft of an old whistle sends the inhabitants of Craggy Island into a downward spiral of paranoia.
- Todd and the Book of Pure Evil. Crowley High may be a Weirdness Magnet because of the wishes granted by the Jackass Genie Artifact of Doom mentioned in the title, but the book can't really be blamed for the students' tendency to kill the wishmakers... and only a couple wishmakers can be said to have had it coming.
- Like his book counterpart, Joffrey Baratheon of Game of Thrones is a standout example. From ordering the massacre of his father Robert's bastards (nearly all of whom were children), to forcing one prostitute to sexually torture another for his own pleasure, to his emotional and physical abuse of Sansa Stark throughout the second season.
- Theon Greyjoy and Ramsay Bolton, ne Snow, although a little older, are no slouches in that department either, although Theon gets his comeuppance and then some.
- A frequent scenario on What Would You Do?. Actors depict teens in various bullying configurations—boys on boys, girls on girls, the victim targeted because they're gay, albino, or even red-headed—in public places, and we see how the adults nearby react (one thing we learn: adults are more likely to intervene when the teens wear black or otherwise look sort of gangsta).
- Another one had a big teenage boy not only mouth off to his mother at a drugstore but do so in a way that strongly suggested he had physically abused her.
- On Grimm, teen werefolk tend to be this, even more than adults. Like the violinist were-rat, the sweet little were-badger (or -wolverine; some sort of mustelid), or the hybrid were-tortoise/were-lion.
- On Spartacus: Blood and Sand there are a couple.
- In the first season, Numerius seems like a nice enough kid who worships Spartacus the way one would a famous athlete. He later forces Spartacus to kill his own best friend as part of an entertainment.
- In War of the Damned, Tiberius takes this Up to Eleven, making Julius Caesar look like a Nice Guy in comparison! In his case it is shown that is father is trying to raise him to be a ruthless asshole, and simply did too good of a job of it.
- The episode "Child Predator" has Adam Kemper the so called victim of kidnapper Samuel Abbot. He actually abused his kidnapper and forced him to kidnap and kill children, then pretends to be a guilt ridden victim of Stockholm Syndrome to get an immunity deal for his crimes. Thankfully Sherlock pulls a Rules Lawyer and get him convicted.
- Episode "One Way To Get Off" has Sean Figueroa, illegitimate son of Serial Killer Wade Crewes, who's father convinced him to commit murders to make himself look innocent. He killed two couples, and a bystander who happened to be present.
- Farscape has Talyn, an emotionally screwed up, paranoid, and generally Emo Teen who can only be calmed down by his mother. This would not be that much a problem in comparison to the rest of the main cast, were it not for the fact that Tayln is a living warship created as a superweapon by the Peacekeepers, and passes inspection with flying colors. His way of telling you to get out of his room is venting you out his airlock.
- Pretty Little Liars is this trope, with characters like Alison, Mona, Jenna,etc.
- Gangster, Serial Killer and Serial Rapist Robert Quarles committed his first murder at fourteen, executing his sexually abusive, drug-addict father on orders from mobster Theo Tonin. As an adult he seems to view this as the point at which his life effectively ended, turning him into the monstrosity he is now.
- Harlan County marijuana dealer Dickie Bennett, is an interesting example, being a man in his forties who is effectively trapped in his teenage years. A bully even in high school, Dickie suffered a crippling leg injury when one of his victims hit back, leaving him emotionally arrested at the age of fifteen.
- Subverted by Loretta McCready and Kendal Crowe. The former's a Bennett family protege turned drug dealer, slowly building her own criminal enterprise. The latter's from a long line of smugglers, thieves, and conmen. Both however, have well-developed moral compasses, and are better people than ninety percent of Harlan's criminals.
- 30 Rock has Kaylee Hooper, who's basically Jack in the body of a teenage girl.
- At least two episodes of The Blacklist have played with this:
- In "Ivan", the Skeleton Key was stolen not by the titular hacker, but by a 17-year-old boy who was stalking the daughter of one of the Key's makers.
- In "Arioch Cain", Elizabeth Keen is targeted for assassination. The backer of this assassination? An angry teenage girl who believed that Keen was responsible for the terrorist attack that killed her mother.
- An episode of CSI NY featured a sociopathic teenage girl who was a member of an acting troupe. First she manipulated the lead actress into confronting the leader for tricking her into joining his frauds; then, she killed the actress with poison and made it look like the troupe leader killed her. She did this solely For the Evulz and got away with all of it.
- My Chemical Romance's The Black Parade features the song "Teenagers", which starts off about how adults view teenagers, and then how, with the way school life has changed in recent years, why it's understandable they think this way. The end message seems to be that it's a vicious cycle.
- Becky by Be Your Own Pet. The protagonist of the song murders a girl in revenge for high-school bullying. Apparently slightly based off Jemina Pearl's high school experiences. Without the murder.
- A recurring theme in Hailey Hatred's live journal, where she document teenagers doing horrible and or stupid things throughout her travels, usually while reminding herself she wasn't far removed from being one herself.
- Team Bad's tag team title run of UCW-Zero was basically this trope, though somewhat played for laughs when the bias referees would berate management for putting them in matches with older, stronger baby faces or Exoticos like the Fella Twins.
- Monster Hearts runs on this both on the metaphorical and literal sense. The game uses Rule of Drama to ensure the character's lives are kept messy and unboring, and this often results in many teenage characters and NPCs getting into verbal, physical and emotional fights. The fact that most of them are also actual monsters only heightens the drama.
- Bleak World has the Androids, who are cyborg teenagers brought back to life from the razors edge of life and death by a corrupt corporation.
- Batman: Arkham Origins: Anarky is revealed to be a young teenager when Batman stops his terrorist attacks throughout Gotham. Although he's a Well-Intentioned Extremist, it's his immaturity that causes him to slip into evil and assume that violence is the answer to changing the world.
- In Knights of the Old Republic. The cadets at the Sith Academy are early 20s at best, and indulge in things like beating up passers-by, and playing cruel tricks on the "hopefuls," like telling them to stand until they drop of exhaustion or starvation. Carth's teenaged son is a fabulously short-tempered brat who will try to skewer his own dad on a lightsaber if you choose the wrong dialogue option. Subverted in that Kel Algwinn isn't a bad guy, just unaware of other options, and that Mission Vao is higher on the Karma Meter than the party's Jedi because of her optimistic, trusting nature.
- Yume Miru Kusuri. Aeka's route. When the Alpha Bitch isn't ripping up all her tuition money or convincing her boyfriend to rape the poor girl, her classmates are all tasering her in the middle of class.
- Bully gives you the chance to play as a pubescent terror. Student looks at you the wrong way? You can shove him to the ground. Nerd bumps into you in the hallway? You can knee him in the balls. Preppy student mocks your clothing? You can shove him through a glass window, beat him with a cricket bat, and repeatedly stomp on his head while he lays moaning on the floor. Downplayed at times when the main character can be played as a compassionate teen and actively protect vulnerable students. And in the actual story, he usually only messes with people who have done something to deserve it.
- Mass Effect 3 averts this completely when you rescue the remaining students at Grissom Academy. The biotic students, all late-teens or very young adults, act like a family, and are all training to fight the Reapers on the front lines with their gift-abilities, knowing quite well how dangerous it is to do so. In fact, if you order them to act in a support role in the war (forming barriers for troops on or near the front lines), they'll protest it, but follow along the order. Regardless, they sometimes have to act offensively in self-defense even in the support role, and save a ton of lives with their actions, not complaining at all during their service in a particularly hellish war. The savants and intellectual geniuses of the Academy also act fairly mature and contribute wholeheartedly to the Crucible Project.
- There's also an 18-19 year-old kid who eagerly volunteers to sign on as a single-mission freelancer for a mercenary group in the second game, equipped only with a cheap pistol. You can break his gun, which he'll later deeply thank you for after seeing news reports of every single mercenary who participated in the mission ended up dead, telling you that he won't waste the chance you gave him. Or, you can tell him where to sign up, and you later see him casually sniped by Garrus as he assaults the base along with the rest of the mercs. This is in a series that doesn't hesitate to show people of all races, genders, affiliations, and cultures acting nobly or monstrously and everything in between.
- Bass from Mega Man (Classic) resembles a teenager, and he's an arrogant jerkass that's jealous of Mega Man.
- Booker DeWitt of Bioshock Infinite was only sixteen years old when he was at the Battle of Wounded Knee, which nowadays is often referred to as a massacre. It's implied Booker himself might be the reason why. It's revealed that Slate's soldiers gave him the nom de guerre of "The White Injun" because he collected so many grisly trophies from the dead, while Comstock's Voxaphone recordings reveal that after he was (correctly) accused of having Indian blood, he decided to prove them wrong by burning tepees down with the inhabitants (women and children) still inside. Since this took place before the point of divergence that turned Booker into Comstock, the Booker we play as is guilty of this as well.
- In Beyond: Two Souls, a group of teens lock Jodie in a closet because she got a girl a book for her birthday. If you pick revenge, it doesn't end well for them.
- In the semi-canon manga and game "The King of Fighters: Kyo", it's all but stated that Leopold Goenitz was already aware of his role as member of the Orochi clan when in his teens, and that he still was a teenager when he killed Maki Kagura, then a 10-years-old girl.
- In Ninja Pizza Girl, the enemies that you face are other teenagers who are employed by Mega Co Pizza. If you encounter them, they will throw things at you, push you down, verbally assault you, and laugh at you.
- Five Nights at Freddy's 4 shows what happens when you combine this trope with a Big Brother Bully and an animatronic. In case you're wondering, it's the Bite of '87. All because the protagonist's brother and his friends wanted pull up a prank on the child, and...
- The post-apocalyptic United States depicted in Fallout is home to some terribly shitty people, but one of the absolute worst ones to ever appear is Myron from 2, the greedy, lecherous and callous teenage "pharmacist" who developed the drug Jet for the Mordino crime family. Jet is one of the most addictive and dangerous drugs around, it killed hundreds of slaves in the preliminary tests, and it's unlikely there will ever be a cure for Jet addiction - which is convenient for when his employers want to enslave entire towns by getting people addicted to it. Myron's completely proud of his creation and will casually tell you all about it over a cool beer. He doesn't care about the widespread suffering he causes, he only cares about continuing to produce Jet so he can be rewarded with cash and whores. Not to mention if you're playing as a female character with low Intelligence and high Charisma, he'll offer you a spiked drink. Even decades after Myron's canon death (being stabbed in a bar by a crazed Jet addict), Jet has been distributed across the post-war United States and ruined countless lives.
- Wick starts off with the player blindfolded being led into a haunted forest by their teenage friends. In the normal ending of the game, the police were called and yet they insist on playing Wick again and inflicting that psychological torture on someone else. In the secret ending, they don't seem at all to care that one the player apparently went missing after the events of last year.
- Overcompensating: Jeffrey Rowland in this strip seems to be subverting this, and then says in the alt text, "When I was a teenager I probably should've been put in prison."
- This Goblin Hollow strip subverts it in Ralph Hayes, Jr.'s favorite way.
- About half of six-sweeps (thirteen years)-old Troll characters qualify. Specifically Vriska Serket, Eridan Ampora and Gamzee Makara.
- Karkat and Terezi mention this regarding the pre-scratch ancestors:
KARKAT: THEY PRACTICALLY AREN'T EVEN PEOPLE. THEY'RE WALKING, TALKING, LIKE...
KARKAT: I DON'T KNOW HOW TO PUT IT. ALMOST LIKE LIVING PARODIES OF HORRIBLE, CLICHED BEHAVIOR PATTERNS.
TEREZI: WH4T, YOU M34N L1K3...
- In Survival of the Fittest, some of the high-schoolers thrown into the game prove to be capable of horrifying acts of brutality, though many of the more violent ones are already insane, and a few are thrown onto the island from insane asylums and the like specifically to spice up the game. Even with that in mind though, the kids almost seem worse than the terrorists who abduct them.
- Whateley Academy has what might seem to be more than its fair share of students who fit this trope. Possibly justified, though, in that it's presented as the only school for teenage mutants in the US (if not much of the world, given the number of foreign students showing up) — there just aren't that many other places for the offspring of infamous supervillains, the badly traumatized, and the just plain assholes among them to go, so Whateley quite naturally becomes the place where one almost by default encounters all of them at once.
- A lot of Protectors of the Plot Continuum are in their teens, and committing acts of extreme violence is all part and parcel of the job.
- The Bullies that plague the main character of Worm are bad enough that they drive her to near suicidal recklessness and induced a complete mental breakdown that was traumatic enough to trigger her powers. A later point is made of how despite this, none of her classmates got involved other then to join in. At no point do they show even a hint of remorse or even a reason for victimising her constantly.
- Any memory that The Nostalgia Critic seems to have of high school involves some sort of bullying, and in Christmas with the Kranks we actually get to see some of it. In his Doug's First Movie review, he loses his temper at teen girls thinking the monster dressed up as female is cute, when in reality they cause so many body issues in each other.
- The Nostalgia Chick was a Bratty Teenage Daughter when she was younger, and got bullied so much in school that she tried to take the "fur and limo" type of revenge at her Class Reunion.
- In the titular boarding school of Addergoole, older students Keep younger students - this is slavery aided by mind control. Since the administration puts few limits on what the Keeper can do to their kept, beyond a one-year-max duration, this in many cases leads to abuse, which over the years becomes worse, when former abused Kept continue the tradition how they have been taught.
- Codename: Kids Next Door follows the milder version of this trope. It couples Adults Are Useless with the dubious situation of teenagers being loyal minions, perhaps based on the logic that teenagers actively try to behave like adults. Although they also betray the adults as well, possibly in reference to the fact that teenagers are also more rebellious against adults than kids are (or just to show that they are indeed bastards).
- Many characters in the show enter an "outgrowing" phase shortly before their 13th birthday and become the rebellious bastard stereotype we know and love when they finally hit the big 13. Though not all of them are affected by this. Some teens (and a few adults) are hired as black ops double agents for the KND.
- And there's Laura, who, whenever her Berserk Button gets pressed (In more ways than one), transforms into a monstrous teenager.
- Superman: The Animated Series had an episode where Granny Goodness created a crime syndicate out of wayward teens in Metropolis, using Apokoliptian technology, love, and twisted sadism.
- Parodied in Animaniacs via the Katie Ka-Boom shorts which took it to outlandish extremes; Katie literally turns into a monster whenever she's upset.
- Two episodes of The Powerpuff Girls featured the Smith family, one member of which was their angry teen son Bud. The first episode, Bud's entire appearance consisted of him yelling something typically teenagerish at his father, such as "I hate you!" and "No one understands me!" The second episode, which features the entire family as villains, provides every member of the family with a motivation for why they hate the Powerpuff Girls - and Bud's is "I hate everything!"
- There's also the Gangreen Gang, who are teenage monsters.
- The My Little Pony: Friendship Is Magic episode "Dragon Quest" reveals that this is a species-wide issue when it comes to adolescent dragons. At first they're simply loud, obnoxious Jerkasses, but then it's revealed that one of the things they like to do for fun is kidnapping and smashing phoenix eggs. When the eggs hatch, their leader decides that they'll take the newborn babies instead.
- The Fairly Oddparents: Vicky. She's consistently painted as a evil babysitter, but it only brings up her age when Rule of Funny applies. More than likely that she has always been and will always be evil. Her age is a side-effect of being a babysitter. In one episode she's member of a whole club of evil teen girl babysitters. But it's not likely they'll be brought up again.
- American Dad! parodies this, showing a pubescent Haley as a destructive monster whose parents have to get improvised weapons to deal with.
- Azula of Avatar: The Last Airbender is nearly the lone exception to an otherwise subverted rule. She's the one prominent teenager in the entire show that starts and remains evil from beginning to end. However, she ends up being exposed as a very tragic, messed-up person, so not many people in-show or out of it tend to see her as a "monster" anymore.
- Probably the next most prominent example is Jet, who attempts to kick an old man in the head and flood a whole village of innocents in his intense rage towards the Fire Nation. He's the leader of a gang of teenagers willing to commit murder and other dark crimes for no other motivation than revenge, and gets called a monster in-universe by Katara. He's changed his approach by the next time we see him, insisting that nobody else will get hurt when he tries to expose two firebenders disguised as Earth Kingdom refugees, but is forced to learn that Redemption Equals Death when his plan backfires on him.
- The vast majority of villains on Static Shock are superpowered teenagers.
- Ditto for Batman Beyond.
- Kevin 11 of Ben 10 is an interesting inversion, in that he was an Azula-level Ax-Crazy Enfante Terrible sociopath as a preteen kid, but calmed down into a genuinely heroic Jerk with a Heart of Gold by the time he actually became a teenager.
- Mac's 13-year-old older brother Terrence in Foster's Home for Imaginary Friends. In the pilot (along with Duchess), he and her plan to kill Bloo, and most of his life is devoted to making Mac's life a living Hell.
- One episode of King of the Hill has a gang of teenage paintball delinquents making Hank and his buddies' life a living hell (to the point of doing drive-by shootings with the paintball rifles) just because he took a stand for Bobby earlier. The trope's even mentioned when they get Bill to pull a Wounded Gazelle Gambit so Hank and Dale could pick off two of them:
Hank: You were right, Bill. Teenagers are cruel. They'll pick on the slowest, heaviest... Well, the important thing is, you were right, Bill!
- Most of the Sherman High students in Sym-Bionic Titan are pretty cruel to the show's main trio when they start school there. Some of them get better.
- In Ed, Edd n Eddy, Eddy's older brother.
- Mother Up: Neighborhood teen Joel (the only teenager seen in the first season) hates everyone, especially his stepfather Greg who he repeatedly tries to maim, listens to harsh music, vandalizes things and plays ultraviolent video games.