Insane Equals Violent



A fictional character who is insane (in the psychotic, out of touch with reality way) is usually also violent. Thus, in typical TV-land logic, if you become psychotic, you must also become violent—even if you never were before.

This trope dictates that someone who is not violent by nature will (somehow) automatically become violent if he ever loses his grip on reality. A character who already resorts to violence will turn on his friends instead of fighting whatever enemy he usually fights.

What's more, the fictional psychotic will not only be invariably violent, he'll actually be more lethally effective than a sane person. Count on the villainous psychotic to be a nigh-unstoppable assassin who's mastered Offscreen Teleportation rather than, say, a poor deluded man uselessly arguing with or attacking his own hallucinations, or getting caught during his very first crime because he wasn't trying to escape.

This is usually used to enhance the frightening aspect of a character, since psychosis makes him unpredictable and his behavior unfamiliar. In a fight, he has terrifying Confusion Fu. Many slasher-film villains are insane; most characters perceived as psychotic are also violent and unpredictable. The very connotation of "escaped lunatic" is that of a violent person, an urban-myth trope that goes back as far as the first mental asylums. The same goes for "psycho", "madman", and "insane", all of which commonly imply violence or evil (or both).

Technically, this is Truth in Television: People with mental illnesses do commit slightly more violent crime than average. But it's not nearly as common as television would imply. Alcohol and drug abuse are associated much more strongly with violence, and when you account for the increased prevalence of drug and alcohol abuse among those with mental illnesses, the extra risk of violence vanishes completely... but that's not as interesting.

Anime and Manga

 * Dragonball Z generally implies that the more insane the villain, the more powerful. The series went from the generally sane, but evil Frieza, to Cell, to the unbelievably psychotic that is Majin Buu.
 * Higurashi no Naku Koro ni is full of this. In the plot's defense, it does try to justify it, and one of these people  actually does have some violent background before coming into contact with said.
 * Also,  doesn't get violent when it is activated.
 * She knocks off a bridge in one continuity and kills both  in a PlayStation 2-only one.
 * Don't forget about.
 * Of course, the main
 * Farfarello of Weiss Kreuz falls under this, particularly in back story. As a child, he
 * Chiri Ktsu of Sayonara, Zetsubou-sensei started out as mostly a Control Freak / Neat Freak, but over time becomes defined by violent psychopathy and is presented as a Serial Killer.
 * Taken to the extreme in Soul Eater. Insanity, fear, madness, etc. is basically this universe's Virus. You can be infected with insanity, and being insane means that you have the urge to hurt things. By killing humans and eating their souls (which is what insane people do, apparently), one can actually become an Eldritch Abomination. This is how the series' Big Bad Asura became the Big Bad—he was a nervous person who succumbed to his fear, and took the life of an innocent human and consumed their soul in order to gain power. (Ironically enough, consuming the soul of a corrupted, insane person in this series has no negative side effects whatsoever.)
 * Andrea Cavalcanti/Benedetto in Gankutsuou is an effortlessly charming fop who happens to also be a wild-eyed rapist with daddy issues. Best demonstrated when he tries to rape his fiance Eugenie and suddenly attacks Haydee.
 * Also, The Count.
 * Alois Trancy in the second season of Black Butler. He's basically Ciel on Nightmare Fuel and in the first episode he stabs out one of his maidservants eyes with sadistic amusement for simply looking at him.
 * Akito of Fruits Basket.
 * Also, Ren.
 * Increasingly, Sasuke of Naruto.
 * As well as Orochimaru and Hidan.
 * Bleach: Ichigo's Super-Powered Evil Side.
 * And Grimmjow. He basically beats seven shades of crap out of Ichigo during their fight while laughing and later kills Luppi by stabbing him through with his arm and then incinerating half his body with a Cero before also laughing insanely.
 * Not to mention Nnoitra, who basically lives for violently kicking the dog.
 * A few characters in Elfen Lied, namely Lucy and Mariko. And the cruel kids from Lucy's past who were clearly psychopaths who beat Lucy's dog to death while making her watch just because they didn't like her.
 * A few characters in Code Geass. Namely Rolo, V.V., and Mao.
 * Yuno Gasai of Mirai Nikki. But there's many others too considering how most of the cast is almost as Ax Crazy.
 * Hellsing's Alucard.
 * Haguro Dou of Wolf Guy Wolfen Crest.
 * Katsuragi of Sakura Gari.
 * Krad of D.N.Angel.
 * Hansel and Gretel of Black Lagoon.
 * Bryan Hawk from Hajime no Ippo.
 * Vision of Escaflowne: Dilandau. BURN BURN BURN!!!
 * Clair Leonelli of Heat Guy J

Comic Books

 * Batman villains offer several examples:
 * The Joker is a borderline case: he's clearly insane, but he may or may not have been violent before becoming the poster boy for skin bleaching. We have only his word that he "just had a bad day". Also, he isn't always or automatically violent, just totally uninhibited - if he feels like killing, he'll kill. Or maybe the next second, he'll throw pies. Or hand out money. (Though he usually DOES feel like killing.)
 * Two-Face wasn't evil until one side of his face was ruined and (depending on the version) his insanity either began or became much worse
 * In fact, most Batman villains tend to fall into this category... with the exception (usually) of Humpty Dumpty, who saved Batgirl from falling off a building, fixed her dislocated shoulder, and went quietly to the asylum.
 * Batman himself inverts the trope. He's given to solving problems with violence his brain well-thought-out and carefully-applied violence; whenever someone goes after his mind by making him hallucinate, he usually tries to "power through" by retaining his sanity with his immense willpower and trying to refrain from violence until he figures out what's wrong and how to correct it.
 * Deadpool becomes more unhinged than usual during the Black Box story arc of Cable & Deadpool. Even though he can't remember it later, it is revealed that . When asked why he did it, he replies that he doesn't know. Since his mind is more out-of-whack than usual, he just killed for no reason.
 * However, Deadpool was pointlessly violent since long before he was portrayed as insane.
 * Rorschach from Watchmen was already violent and unstable even before a certain dog incident, but after that he becomes even more violent, in his own words explaining that he had been merely soft before because he let his victims live.
 * Nite Owl notes that, before he goes nuts, Rorshach was actually the normal one in their little group.
 * When Harry Osborn became the third Green Goblin, he was not under influence of the Goblin Serum (though it was later retconned that his father did gave him some), but merely under the influence of drugs and insanity.

Fan Works

 * Bag Enders features the poster child for this trope, Frodo, during one of his little moments. Even Gandalf is scared of him.

Film

 * Jason, the hockey-mask-wearing psycho from the Friday the 13 th films.
 * Most slasher movie villains in general are either this or some supernatural thing that's returned for revenge. Unless it's In Space.
 * Unless it's a psycho killer IN SPACE, like one of the Jason flicks, one of the Pinhead flicks, ...
 * Hannibal Lecter. Jame Gumb. Frances Dolarhyde. Jacob Garrett Hobbes. Then again, when part of the premise of a series is that it's about catching serial killers...
 * Jack Torrence goes violently, and effectively, insane via cabin fever and alcoholism in The Shining, hunting down his terrified family with an axe. This is somewhat justified in the Stephen King novel, as being insane puts him under the hotel's control; that might also be true in the movie, though Stanley Kubrick deliberately leaves it vague.
 * In the TV miniseries remake Stephen King's The Shining, Jack (played by Steven Weber) is more clearly a nasty person only when he's drunk, an aspect King felt Kubrick's film lacked (in Nicholson's portrayal, Jack seems a bit scary even before he falls off the wagon). Problem is, Weber isn't nearly as frightening. As Kubrick said, when some of his actors complained he was pushing them into unrealistic, over-the-top performances, "Real is good. Interesting is better."
 * In Love Actually, Laura Linney's character's brother is in a mental hospital. We only see and hear from him briefly, and it seems he has some kind of paranoid disorder (he thinks the nurses are trying to kill him and wants to hire either the Pope or Jon Bon Jovi to perform an exorcism for him). When she visits him, he hauls off and tries to hit her without warning and for no reason. A hospital worker rushes in to stop him and then he's fine again.
 * In Miracle on 34th Street, Doris worries that because Kris Kringle believes he's Santa Claus, he'll eventually become violent.
 * Subverted, in that not only is he harmless, well...
 * Norman Bates, who seems harmlessly socially awkward at first, and is gradually revealed to be a.

Literature

 * All of the insane asylum residents in Kathryn Hulme's The Nun's Story embody this trope to some degree. The Archangel Gabriel, and another inmate, who is never caught,  . Even the Abbess (who, much to Sister Luke's surprise, turns out to have been an actual abbess), turns violent when thwarted.
 * in Jane Eyre often sneaks out from her room and tried to kill Mr Rochester a few times. She even bit and stabbed her visiting brother. And it culminated when she tried to set Jane's room on fire, leading to the whole house burning down and her own Karmic Death.
 * In The Wheel of Time Series it is stated that any man to use magic will eventually be turned insane and then they will kill everyone around them. Heck the world was destroyed by 101 men who saved the world by sealing the Big Bad who then cursed the source of magic drove them insane and caused them to rip the world apart in a horrid frenzy of madness and killing.
 * In The Wereling Trilogy, Mercy is a complete psycho who is violent by werewolf standards. According to Kate, this is because of excessive inbreed (which is also the only reason that they want Kate to mate with a newly-turned werewolf, to stabilize things). Kate's brother is just as bad.
 * In Harry Potter, Bellatrix Lestrange, Voldemort, and the Gaunts are all utterly insane, presumably from inbreeding. All of them (Merope excluded) openly attack people for reasons including amusement. In a subversion, Order of the Phoenix shows us . There's also Lockhart, who is pretty much treated like an overexcited child.
 * The subversional ones are actually truer to life; the spoilered example is sedate, but utterly detached from reality, and occasionally wanders a bit. Lockhart doesn't just get treated like an overexcited child, he behaves like one as well; he's aware that he seems to be incredibly famous, but has no idea why, and the whole thing is an exciting mystery to him.
 * Peeta in Mockingjay when he is Brainwashed and Crazy. . It is justified in that.
 * Invoked in Carry On, Jeeves—Sir Roderick Glossop, who thinks Bertie is insane, expresses his fear that the next stage may be "homicidal". (In truth, Bertie isn't what you'd call mentally balanced, but he's far from violent.)
 * After the main character of The Chronicles of Professor Jack Baling goes crazy trying to unlock the secrets of his student's perpetual motion machine, he ends up building a death ray. Violence ensues.

Live-Action TV

 * River Tam from Firefly is psychotic, violent - and a protagonist. Her violence is directed at the bad guys (and also, for reasons that might have become clear if the series had continued, at anything with a Blue Sun logo). Before the experiments that made her psychotic, she was a normal, nonviolent (if extremely gifted) young girl. An example of a Justified Trope, since the aim of the experiments was to create a Super Soldier, and violence kind of comes with the package.
 * Also justified because they removed bits of her brain, including one part that was supposed to let her push things that upset or bothered her out of mind. So basically she's a psychic supersoldier who is totally incapable of ignoring something that causes her distress.
 * The Reavers are also a trope. "Bushwhacked" gives us the descent of someone exposed to their brand of madness (revealed in the movie to be ).
 * Alpha from Dollhouse appears to be this trope - the composite event that gave him a whole host of imprinted personalities made him into an insane genius and also a psychopathic killer.
 * In the Buffy the Vampire Slayer/Angel universe,, is repeatedly referred to as "psychotic", with direct reference to her violence. In fact, however, she shows no signs of delusions: she's on the edge of mental breakdown rather than past that point. When she does
 * I, Claudius manages to subvert this despite featuring the actual Caligula. His violent / psychopathic tendencies are explicitly shown not to follow from his psychotic delusions: he's a killer from childhood, but doesn't go mad until after he becomes Emperor years later. Livia and other murderous characters are described as "mad" by other characters, but are not shown as irrational - even Nero, explicitly called "as mad as... Caligula", is clearly nothing of the kind.
 * Insanity in Star Trek-land seems to consist of attacking people, yelling, having bulging eyes and sweating a lot. And being played by Morgan Woodward.
 * Averted in Criminal Minds, where Reid points out that the insane are less likely to be violent, but that when they are, it's usually a lot worse than normal violence.
 * Like in "With Friends Like These...". Up to Eleven.
 * Of course, it's a shorter list the number of criminals on Criminal Minds who aren't mentally ill, and as it's almost never pointed out the majority of them are non-violent, this comes off a bit flat to some.
 * Subverted in an episode of The Closer- the father of a disorganized schizophrenic confessed to a murder even he thought his son had committed, when in fact the son had merely discovered the body.
 * In Being Human (UK), vampires are shown to be the fantasy equivalent to drug addicts, making them go batshit if they don't get any blood. According to Herrik though, all people are that violent and vampires are just beyond any constraints.
 * In Six Feet Under, the one character who is bipolar is also psychopathic and tries to carve off the tattoo on his sister's back, after slicing off his own.
 * There's quite a few characters in Oz that fall under this.

Tabletop Games

 * Dungeons and Dragons 3.5 features several spells which can cause the target to become insane. An insane person has to roll on a chart to see what their character does; there is a 10% chance the character acts normally, a 20% chance to run away as quickly as possible, etc. The highest probability action (30% chance) is that the character attacks the nearest creature, friend or foe.
 * Also the spell Call Forth the Beast in the Heroes of Horror book. The next time the target goes to sleep, they immediately wake up with a bloodthirsty, psychotic attitude with the sole goal of as much violence and bloodshed as possible. After the spell wears off they fall back asleep and wake up with no memory of what happened.
 * In 4E, there is a whole of powers that force your enemies to attack each other; most have "madness" or some synonym thereof right in the title.
 * The Marauders from Mage: The Ascension are Mages who went insane via mundane or magical means. In this setting, how a Mage perceives the world and believes how it should work is what changes reality. With hallucination and delusion, this becomes... somewhat skewed. The Marauders' existence itself is violence upon reality.

Toys

 * Vezon from Bionicle basically has new mental disorders as the plot demands, among them a rather literal case of Chronic Backstabbing Disorder. However, he's considered relatively harmless, as he has no powers and is physically weaker than most of the other characters. His violent tendancies are usually Played for Laughs.

Video Games
"Shepard: Say goodnight, Manuel. SHEPARD PAWNCH Doctor:' What are you doing?! Kaidan: That may have been a little extreme, Commander. Shepard: It was only a matter of time before he did something crazy. And dangerous."
 * James Marcus of Resident Evil 0 is driven insane by his death (and subsequent rebirth via virally-infected leeches) which turns him from a relatively mild-mannered scientist into a revenge-fueled monster who slaughters an entire train full of workers—and then a training facility—and he's implied to have released the T-Virus in the first game, which leads to an entire city being NUKED.
 * Many of the bosses in the game Dead Rising are mall workers whose cheese slid off their collective cracker during a Zombie Apocalypse. The violence is justified, as those whose reaction tended more towards rocking quietly in a corner were probably turned into hamburger very quickly.
 * Count Waltz of Eternal Sonata tries to cause this by making the madness-inducing cure-all mineral powder relatively affordable. Because the madness only sets in after a period of time with the normal powder, most people don't make the connection. And in the meantime, you start being able to use magic. Waltz's motivation for doing this is to turn the population into insane magic-users, because those make good soldiers.
 * Zeno Clash has a Double Subversion. Ghat notes that the Corwids aren't necessarily dangerous, because they just do whatever they want. Then they decided that what they want to do is attack Ghat, and possibly eat him.
 * Though there are others who you never fight, such as the guy who just walks in a straight line, forever.
 * Subversion in Scribblenauts. Entering the word "Psycho" spawns a girl with a knife, but like any neutral NPC, she only attacks when frightened and holding a weapon.
 * Splicers from BioShock (series) are all insane and violent, but they have some excuses, such as still believing there is a war on and
 * Addiction to ADAM also helps.
 * This is disturbingly averted in Bioshock 2 where the player can find some splicers who do not attack and just sit there, rocking back and forth.
 * An apparent invocation of this trope saw a British psychiatric charity condemn Manhunt 2, despite the lead character- and most of the enemy characters- not actually being insane at all.
 * The Japanese release of Dementium the Ward was met similarly.
 * Averted in Dwarf Fortress: Crazy Dwarves might go berserk and attack other dwarves and kill people, but they're just as likely to be Driven to Suicide or strip off their clothes and run around naked.
 * Renegade Shepard can use this trope to justify punching a guy in the face in Mass Effect. He keeps spouting doomsday prophecies, and, well:


 * Gregory in Rule of Rose fell into depression
 * In American McGee's Alice, the whole plot of the game is about violently abusing and protecting yourself from the mutated enemies seen as mere small cartoons in the Disney movie.
 * The second game is an aversion. Alice is violent in her fantasies but almost completely helpless in real life. The only time she actually hurts someone, the player would too if he could.
 * Demon Lord Ghirahim from The Legend of Zelda: Skyward Sword. He's Ax Crazy and has unabashed bloodlust, first promising to beat Link within an inch of his life, then burn him alive, and then finally torture him until he's deafened by his own screams.

Web Original

 * A variation appears in Survival of the Fittest with those who play the game, especially since many are eventually driven insane, if they didn't start out that way. By necessity, "players" are distrustful and hostile towards everyone else, as they aim to be the winner and Sole Survivor, and many attack all other people on sight. Sometimes this verges on Chaotic Stupid behaviour.
 * When Freeze Man from In Wily's Defense went insane, he started killing people for the fun of it, despite his being a robot and therefore breaking the rules.
 * Both averted and played straight in Protectors of the Plot Continuum. Most agents are a little crazy, but those who have real-world disorders aren't any more violent than anybody else (which, granted, isn't saying much when it's a PPC agent you're talking about). However, insanity induced by contact with too much horrible fan fiction does occasionally make agents find themselves a flamethrower and start burning things.
 * Flippy of Happy Tree Friends.
 * Common in the grimdark Tumblr blogs of My Little Pony: Friendship Is Magic, resulting in the likes of Friendly Twilight (complete with her Madness Makeover from the episode "Lesson Zero"), Flutterstalker, Crapplejack, Lil' Miss Rarity, Fractured Loyalty (Rainbow Dash), and of course, Pinkamena Diane Pie.

Western Animation

 * Ren of The Ren and Stimpy Show is sort of an aversion. He's both insane and violent, there's no questioning that. However, he's only violent when he's being normal; when his psychotic tendencies are triggered, he becomes terrifyingly calm and never lays a mere finger on Stimpy. Instead, he gives elaborate To the Pain monologues. "Stimpy's Fan Club" and "Sven Hoek" contain possibly the best examples of that.
 * Heloise of Jimmy Two-Shoes.
 * Donald Duck in Mickey and the Beanstalk, shown in the trope picture, having a hunger-induced breakdown and attempting to kill their cow so he, Mickey and Goofy can eat.
 * Avatar: The Last Airbender: Azula has always had a penchant for violence, but she was most likely to only use it when it was most needed, to dire effect - an apt comparison to the trick for lightningbending. However, when she goes round the bend, her sadism and violence rocket the hell up. But on the realistic side, she gets considerably less effective when insane. It's doubtful the heroes could have defeated her if she'd stayed sane.
 * Interestingly, this is often subverted in Adventure Time. The three most obviously mentally unstable characters, The Ice King, Lemongrab, and the Tart Toter, aren't evil or violent. The former is a wizard who occasionally will battle Finn, but he isn't any more violent than the sane characters on the show. As for Lemongrab and the Tart Toter, these guys are just mentally unstable- not violent. It's the sane characters, aka Finn, Marceline, etc., who display occasional violent tendencies.

Real Life

 * Mental health and medical communities say that people with mental illness are no more likely to be violent than anyone else. This is only sort of true. Mentally ill people aren't more dangerous, except that they are a lot more likely to have symptoms of alcohol or drug abuse, and those are linked to violence.
 * This comes from this study of acute psychiatric outpatients which I got out of this editorial in the New England Journal of Medicine.