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* ''AudioPlay/AlienAbductionRolePlay'': Regardless of what she says at the start of the series about wanting to eat the human protagonist, Acktreal Domma isn't evil. Just slowly going insane from hunger ever since the human test subjects came on board.
* While not as bad as, say, WebVideo/AskThatGuyWithTheGlasses or Sage, WebVideo/TheNostalgiaChick has a habit of smiling a big, girly grin right after she's said something disturbing. It kinda gives off the impression that she has more than a few screws loose.
** And let's be honest here, while his craziness is different from Ask That Guy's stepford, sadistic brand, WebVideo/TheNostalgiaCritic ain't exactly all there.
** Critic's StalkerWithACrush StrawFan Hyper Fangirl. Very early on, Tamara (her actress) called her a "crazy bitch".
* In ''Webcomic/TheBedfellows'', Sheen is always abusive to his roommate Fatigue.
* ''ARG/{{Camdrome}}'' delights in watching people suffer and die thanks to the internet, and when asked what it is he wants, he replied "more". He also claimed he wouldn't mind watching someone's eyes be consumed, and that he "made a mess of himself" when covered in blood at PAX.
* LetsPlay/{{Chorocojo}}'s LetsPlay of the ''Pokémon'' games has characters interpreted as being completely Ax Crazy, such as Misty (no relation to the Gym Leader) and Gatorface the Totodile starter for ''[[VideoGame/PokemonGoldAndSilver Pokémon Crystal]]''.
* The humor website [[Creator/{{Dropout}} CollegeHumor]] portrays Chris Brown like this InUniverse in "[[https://www.youtube.com/watch?v=2fEt3uERI_w Chris Brown's Publicist]]". His real life violent behavior is exaggerated [[PlayedForLaughs for comic effect]]: the acts he admits having committed to his publicist include beating up Music/NickiMinaj--by breaking into her home--driving over a whole band with his car, attacking animals and children, murdering several people (one directly over the phone line), and digging up Music/TupacShakur's corpse to use it as his personal punching bag. Ironically, being "a stupid, violent, lunatic" has no effect whatsoever on his record performance or public standing.
* The Courier in WebVideo/CouriersMindRiseOfNewVegas, though still the hero, ''really'' enjoys mayhem, killing, torture, and '''mutilating corpses'''.
** The series also plays up [[ColdSniper Boone]] as this. At some points, even scaring '''The Courier'''.
* It would be easier to list the characters in ARG/DarkDreamChronicle that aren't.
* Almost everyone in ''WebVideo/DeathNoteTheAbridgedSeriesKpts4tv'' has their moments, but [[https://www.youtube.com/watch?v=F_QhsRInEbM&t=6m57s Chief Yagami and Mikami probably take the cake and murder it horribly]]
* ''VisualNovel/DokiDokiLiteratureClub'':
** ''WebVideo/TheBike'':
*** Much like in canon, [[{{Yandere}} Yuri]] has several moments of letting her sanity escape her. However, her psychotic episodes are somehow worse than her canon self. Case in point? What starts off as a normal video of Yuri teaching how to make a fruit salad devolves into Yuri happily getting carried away with cutting the fruits and then using a chainsaw to saw the kitchen counter in half.
** ''WebVideo/AutisticCommunist'':
*** Yuri again proves to be one of the most insane characters of the cast. In one video, Yuri takes MC and Monika hostage and they are made to watch her cut herself when she felt stressed.
* ''WebAnimation/DSBTInsaniT'': Killer Monster really lives up to his name and loves slaughtering others.
* Rekoj from WebVideo/DungeonsAndDrogans is not good at peaceful negotiation.
* Some supporting characters in Roleplay/EquestriaChronicles are ''extremely'' bloodthirsty for magical talking ponies.
* The protagonist Elsdon in Dusk Peterson's fantasy series ''The Eternal Dungeon''.
* [[spoiler: Evan]] of WebVideo/EverymanHYBRID seems to be turning into this; [[DependingOnTheWriter some]] interpretations of Franchise/{{the Slender Man|Mythos}} also point him as this.
* WebVideo/GloveAndBoots featured [[https://www.youtube.com/watch?v=Tw08ysnzFjo Jack Woods]], who educates Mario and Fafa about raising a rabbit as a pet, and then how to butcher them... and then how to deal with zombie rabbits.
* WesternAnimation/{{Caillou}}'s dad in various ''Platform/GoAnimate'' videos will descend to this level in the various "Grounded" videos. It's bad enough that they punish their kids for an unreasonable length of time, but Caillou's dad will invoke "Punishment Day", which means torturing his son in painful and humiliating ways.
* [[TheDitz Hugo]] in ''THE GREATEST EVAR!" by WebVideo/MatthewSantoro, where he knocks [[TheLeader Matthew]] unconscious, locks him up in a closet, and ties him up.
* In ''Literature/AGreyWorld'' Alex can be very protective of her new friend. When Beth gets hurt in [[http://agreyworld.wordpress.com/2013/09/20/chapter-2-27/ Chapter 2.27]] she gets a bit crazy.
* Everyone in ''WebVideo/HalfLifeButTheAIIsSelfAware'' counts as this, with the exceptions of [[ManChild Tommy]] and [[OnlySaneMan Gordon]] (pre-SanitySlippage, anyway), but Dr. Coomer takes the cake by virtue of managing the impressive feat of being the most [[BloodKnight bloodthirsty]] and deranged out of the whole cast.
--> '''Dr. Coomer:''' You can't commit a war crime if there's no more military to judge you!
* Ross from LetsPlay/HatFilms often tends to portray himself this way when playing as the murderer in ''VideoGame/GarrysMod'' (the game technically requires he kill everyone, but his persona relishes it). He often tends to shout at the top of his voice, shouting for his victims to "EAT SHIT" or some variation thereupon.
* WebVideo/HeroHouse features the Joker, who's just as crazy in this incarnation as he is in everything else.
* WebVideo/HitlerRants and its spin-offs arguably has quite a few. The most extreme would have to be Mallory, who's Ax Crazy ''with dynamite''. The only thing that makes it worse is that he is willing to do ''anything'' if it means blowing up Hitler.
* [[https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&ved=0CEAQFjAB&url=http%3A%2F%2Fknowyourmeme.com%2Fmemes%2Finsanity-wolf&ei=_wX_UJ2NOsTerAHmp4EQ&usg=AFQjCNEXfOB-_p7qHY8Hxj6KawbsKtNcZw&sig2=ykPC8ok0EvaCZGye2BQRlg&bvm=bv.41248874,d.aWM Insanity]] [[https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&cad=rja&ved=0CF4QtwIwBQ&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DYvd0iS5jd50&ei=_wX_UJ2NOsTerAHmp4EQ&usg=AFQjCNHMHLyLKJF7eZMyYsAdVwrc5uNj4Q&sig2=eYOfa1DWLorJQc3F-Zx2xw&bvm=bv.41248874,d.aWM Wolf]]. By a mile.
* [[spoiler:Terrence]] in ''WebVideo/KateModern'', after VillainousBreakdown sets in. He goes around beating up random families he meets in the park and clubbing people with golf clubs just for the hell of it.
* ''LetsPlay/TheMuseum'':
** Raki Umberclan the Bulbous started out fairly stable, but ended up [[spoiler: going completely insane after an incident with the Museum's exhibits.]]
** Moldath Mournsaints. Sometimes he'll kill a whole warband, [[HunterOfMonsters sometimes he'll kill megabeasts]], sometimes he'll kill the last living roc in the world, sometimes he'll kill allies as collateral damage, sometimes he'll kill his own worshipers, sometimes he'll kill undead... and sometimes he'll just raise undead because he feels like it. Not exactly a paragon of mental stability, that chap.
** [[spoiler: Kosoth Salvesank]] gradually devolves into a crazed berserker as [[spoiler: his mental faculties are eroded by the Obin Blight]]. Later turns indicate that this is the fate of anyone infected by this disease, with the host slowly becoming increasingly violent until they're little more than a wild animal.
* The host of [[WebVideo/TheMusicVideoShow The Music Video Show]] has slid into this trope since season four, with jokes involving pulling out knives and baseball bats, cannibalism once discovering bodies and shooting invisible guns. Although there were shades of this in the previous seasons. [[Main/LampshadeHanging Lampshaded]] at least once, commentating that he's lost count on how many people he's killed.
--> "There. Now you'll HAVE to come back to the [therapy] session." Said AFTER he pushes a woman down stairs.
* Kevin "Aces" Low from ''[[Roleplay/NewGamePlusTheRpg NEWGAME+]]'' has become axe crazy due to his increasingly fragile mental state. He dispatches his planets minibosses with increasing violence, taken to using his powers to stalk his rival through a house, murdering his rivals followers as he goes, and burned out an imps eyes, all while wearing a SlasherSmile.
* Master Zen from ''Franchise/{{Noob}}'' claims to be this, but has never gone further than kidnapping in the webseries version. The comic version shows that it is not entirely a boast, as a flash-back shows his player trying to kill members of the Noob guild (who happen to never notice) in real life, but getting HoistByHisOwnPetard.
* ''WebOriginal/ProtectorsOfThePlotContinuum'' Agents have to be a little... strange... in order to function. However, some snap completely; this is called going flamethrower-crazy, since the most dramatic example involved a mad Agent tearing down the corridors [[KillItWithFire with a flamethrower]] while screaming about Series/{{Mister Rogers|Neighborhood}}.
* Why wasn't Plinkett from WebVideo/RedLetterMedia here?
* ''WebVideo/RegularOrdinarySwedishMealTime'''s chef. His attempt to chop bacon with a battleaxe resulted in the destruction of both the chopping board and the table underneath.
* In the fan-made Zelda film Sage of Shadows, the TrueVillain, Davik, is fiendishly intelligent, and yet also a complete psychopath, poisoning his own sister and also gleefully murdering Link's parents in a very brutal fashion, as well as showcasing even after he lost his hand, and he plans on [[OmnicidalManiac destroying the Cycle of Eternity]] due to psychopathic hatred of it. His voice actor, Michael Stevenson, has even [[WordOfGod stated]] that Davik is a villain comparable to ComicBook/TheJoker in terms of mysteriousness and insanity.
* In ''Literature/SavageDivinity'' a whole chunk of the worlds population falls under this with the defiled. The specters that make the defiled this way and the Demons that defiled eventually become are even worse.
* ''Website/SCPFoundation''
** [[http://scp-wiki.net/scp-076 SCP-076-2 ("Able")]]. Able's [[BlueAndOrangeMorality mind]] is filled with a desire to cause violence and ''nothing else''.
** [[http://www.scp-wiki.net/scp-953 SCP-953 ("Polymorphic Humanoid")]]. She is hostile to human life and extremely dangerous. She can penetrate a person's abdomen with her hand and extract the victim's liver, but prefers to slowly torture her prey.
** [[http://www.scp-wiki.net/scp-973 SCP-973 ("Smokey")]]. He hunts down people who are speeding and inflicts horrible painful deaths on them.
* ''WebVideo/SevenSecondRiddles'': Quite a few characters in this universe seem to commit murders for the sake of it. An entire subset of riddles revolves around determining which characters are actually maniacs- the clues range from things like having bloodstains in their room, to having body-parts in the vicinity, to carrying weapons or other suspicious objects.
* ''Literture/ShadowrunStorytime'': Gillette, the Nightingales' [[CloseRangeCombatant Razorgirl]], is very close to clinical psychosis due to having most of her body replaced with cyberware, forcing her to use special medication to keep it under control. [[spoiler: The team end up exploiting this to destroy the Nightingales, goading Gillette into a cyberpsychotic breakdown that kills one of her teammates and causes the other to [[ScrewThisImOuttaHere flee and return to legitimate business.]]]]
* ''WebAnimation/SmashKing'' features a unique incarnation of [[Franchise/TheLegendOfZelda Link]] who is this trope, being driven to this point by [[spoiler: the pressures of being a hero when he just wants to live life normally, and having to swallow his own feelings and forced to do things he doesn't want to, which emotionally tormented him and eventually drove him a little crazy as a result.]]
* Several characters from ''Roleplay/SurvivalOfTheFittest'' definitely fall into this trope. Eminent examples are [[PsychopathicManchild Cillian Crowe of V1]], [[DarkActionGirl Mariavel Varella]] of V2, and [[{{Expy}} Melina Frost of V3]], all of which have cheerfully massacred fellow students in undoubtedly horrific and messy ways. In some instances, characters also fall under TriggerHappy too, although given the prevalence of firearms in each game, this is only to be expected.
* ''WebAnimation/TacticalNoobs'' gives us the Crazy Burger King Guy, a BurgerFool who kills people for doing things like [[DisproportionateRetribution ordering food he cannot give them and voting for a different presidential candidate than him]].
* The Ice Climbers in ''WebVideo/ThereWillBeBrawl''. Okay, ''hammer'' crazy.
* ''WebVideo/TomGrossiComedy:'' A literal example in [[https://youtu.be/0q9WyWJtF54 The NFC East's Reaction to Week 5]] when Gus blames Bruce for Dak Prescott's[[note]]Dallas Cowboys quarterback[[/note]] injury that occurred days prior when facing the Giants. He decides to cut off Bruce's leg so it will match Dak's, only to have Carl intervene for his own revenge for Bruce crashing his motorcycle.
* ''WebVideo/UltraFastPony:''
** (possibly) Derpy Hooves. The best example is her DayInTheLimelight episode "Derp and Destruction", in which she gains supernatural powers and immediately decides to kill everyone in Ponyville with them. Of course, there were plenty of hints beforehand that she wasn't right in the head or safe: In "A Library with No Twilight", she has a brief scene attacking a tree branch while hurling curses at Mother Nature. And in "Ponynet Fight!" she drops heavy objects on Twilight's head and declares "You see, my way does work better!"
** [[OurDemonsAreDifferent Pinkie Pie 2]] once '''burned down''' Twilight's home as a ''prank''. That on top of her general NightmareFetishist tendencies and pretty much being a one pony ApocalypseCult.
** This is downplayed with Rarity, who being a masochist, is generally more interested in hurting herself. But its revealed in ''Bummer In The City'' that she [[spoiler: '''[[WouldHurtAChild MURDERED BABIES!!!!]] for material for her dresses. [[KarmaHoudini And got away with it]].]]
** This is also downplayed with [[TheIrishMob Applejack]], who despite being TheSociopath, is generally one of the friendlier and level head ponies. But, she never hesitates to get violent, like in ''Pega Please!'' where she not only immediately decides to kill the dragon but outright refuses to let Twilight attempt a non-violent solution. Also, she seems to suffer from [[MoodSwinger violent mood sings]], as on one occasions she flipped from trying to comfort her little sister to threatening ''to smack her'', then right back to comforting.
** [[EnfantTerrible Sweetie Belle]]
--> '''Sweetie Belle:''' It's funny, these capes used to be green, but I dyed them red with the blood of chickens.
** Twist, Applebloom's ToxicFriendInfluence, tries to goad Applebloom into hurting ponies and ''burning down the school'' (and succeeds in the latter). [[spoiler: it's later revealed in her introductory episode that Twist is really [[ImaginaryFriend just a figment of Applebloom's imagination]].]]
** Princess Celestia is a combination of this and DepravedBisexual. She once threatened to cut off Twilight's horn over ''a set of tea cups''.
* Jimmy Casket from Venturiantale's videos, he runs around with a knife yelling "Stab stab stab!" and tries to kill everyone.
* The Literature/WhateleyUniverse is filled to overflowing with characters like this, not all of whom are superhumans. Some of them later prove to have BlueAndOrangeMorality, or were driven mad by encounters with some EldritchAbomination, but others are just in it ForTheEvulz. Topping the list are Bloodwolf, Gore, the Marquis, and Sinsear, but they are just the worst of many - even if you exclude BloodKnight s like Counterpoint, or KnightTemplar s such as Crucible.
** And that's just in the canon series. The FanFic has far, far worse.
* ''Literature/{{Worm}}'' has several, but the most extreme is probably Bakuda, a MadBomber who blows up her own subordinates for kicks.
** The [[SerialKiller Slaughterhouse Nine]] are also this, killing massive amounts of people ForTheEvulz. Most of them are ''clearly'' not right in the head, notably [[{{Cyborg}} Mannequin]], [[MadDoctor Bonesaw]] and [[PlayingWithFire Burnscar]], although [[BigBad Jack Slash]] does a good job of being FauxAffablyEvil.

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