History AxCrazy / WesternAnimation

* From ''WesternAnimation/TheVentureBrothers'', Tim-Tom and Kevin, Dr. Girlfriend/Mrs. Monarch's aptly named Murderous Moppets, who [[PsychoKnifeNut like knives]] a little too much.

* Rick from ''WesternAnimation/RickAndMorty''. He has been shown on multiple occasions to go absolutely berserk and overboard upon provocation, including ripping off the equivalent of a robot's testicles and shoving it down said robot's throat when tipped off to the police, engaging in cross-dimensional crossfire with himself when he thinks that other versions of him are trying to kill him, literally going Ax-Crazy and violently murdering various clones of himself (including [[WouldHurtAChild a child and an infant]]), exploding an entire alien colonisation for putting him in a simulation and creating accurate genitalia for his grandson Morty, destroying an entire universe in order to spite its creator, programming his space-car to torture and murder in cruel and horrific ways or manipulate/coerce people into staying away from it when advised and committing countless other atrocities.
** His daughter Beth is this as well, possibly even worse. As Rick puts it and gives her ample evidence of being Ax-Crazy:

** Even his grandson Morty has shown shades of this: when he gets pushed and loses his sense of morality he becomes a homicidal lunatic.

* '"WesternAnimation/BatmanTheAnimatedSeries'': Poison Ivy near the end of her [[Recap/BatmanTheAnimatedSeriesE5PrettyPoison debut episode]]. Her [[TheTease sensual, sultry]] disposition evaporates the moment Batman kicks her to the ground. After which we see the volatile murderess she is underneath on full display, unloading crossbow arrows at him.

* ''WesternAnimation/{{Arcane}}'': Jynx as a teenager. She’s unpredictable to all, usually with explosive and/or deadly consequences.

* The Monkey King from ''WesternAnimation/JackieChanAdventures''. At first, he seems like just a [[ThePrankster prankster]], but before long he's going after Jackie and Jade with an [[AnAxeToGrind actual axe]].

* Creator/{{Disney}} [[UpToEleven one-upped itself]] in ''WesternAnimation/{{Gargoyles}}'', with Demona. During the City of Stone arc, she manages to turn all the humans in UsefulNotes/NewYorkCity [[TakenForGranite to stone]], and then is seen roaming the streets, casually destroying humans-turned-to-stone with a huge mace.

* From ''WesternAnimation/TheVentureBrothers'', Tim-Tom and Kevin, Dr. Girlfriend/Mrs. Monarch's aptly named Murderous Moppets, who [[KnifeNut like knives]] a little too much.
** Also Brock Samson in his worst moments.

** And we also have Jeff Fecalman, the BastardBoyfriend of Quagmire's sister, who beats her [[DisproportionateRetribution for the smallest things]], also willing to kill in cold blood.

** Mrs. Puff turned into this when she tried to ''murder'' [=SpongeBob=] in "Demolition Doofus"; when he did not get hurt and became a star instead, she's ''livid'' and tried to do it herself. And she does not get arrested for it.

* ''WesternAnimation/AdventureTime'': With the seemingly sweet land of Ooo being a DysfunctionJunction, it's not surprising that there are crazy and violent characters.

** [[spoiler:Simon Petrikov as]] the Ice King. His homicidally dangerous and mentally unstable behavior is mostly due to his insanity and dementia thanks to the influence of his crown, with the Ice King being too insane to even know what he's really doing, even though there are times when he actually seems to have. lucidity (although greatly minimized).

** While Lemongrab is usually more strange and disturbed than dangerous, on his bad days he becomes dangerously unhinged and violent to the point of almost devouring his own brother. He is worse in "Too Old", becoming a completely AxCrazy dictator who is very open to sadism and senseless violence. Fortunately, he returns to being sympathetic once he is fused with his brother.

** The Lich. While outwardly calmer and more composed than other villains, he's been killing on a planetary scale for a very long period of time, and his ultimate goal is the absolute is the eradication of all life.

* ''WesternAnimation/AdventureTime'':
** Lemongrab's first incarnation, Lemongrab 1, was a violent cannibalistic madman. However, much of his Ax Craziness is very {{Downplayed|Trope}} after his redemption as Lemongrab 3.
** [[spoiler:Simon Petrikov as]] the Ice King. He was homicidal, explosive and mentally unstable.

** The Lich. He's an OmnicidalManiac with a sadistic streak, after all.
** Then we have [[{{sadist}} Magic Man]], [[PsychoForHire Me-Mow]] and [[{{yandere}} Ricardio]].

* Itchy from ''WesternAnimation/TheItchyAndScratchyShow''. Itchy is a mixture of Ax Crazy and a [[TheSociopath sociopath]], {{sadist}}ically killing Scratchy in various painful ways, and with different instruments: chainsaws, axes, guns, etc.. And the worst is that it only does it [[ForTheEvulz for fun]].

** Stewie's evil clone, Evil Stewie, is a homicidal sadist who willingly commits torture and murder ''in his first few seconds on-screen''. In many ways, he's like the Stewie Griffin of the first seasons, with all of his unbridled sadism and homicidal impulses intact.

* Stewie from ''WesternAnimation/FamilyGuy''. Particularly when Brian owes him money, or when he is [[NotGoodWithRejection rejected]].

** Stewie's evil clone. He is ''much'' more mentally unstable and {{sadist}}ic than the original. His actions are probably some of the most violent and graphic scenes in the history of WesternAnimation and make regular Stewie's crimes look like ComicStrip/{{Dennis the Menace|US}}.

* ''WesternAnimation/{{Arcane}}'': Jynx as a young adult. She’s unpredictable to all, usually with explosive and/or deadly consequences.

* Trent Boyett from "Pre-School". After he gets released from juvenile hall, he puts Butters and the sixth-graders in the hospital, the former for not coming to his defense when he was being falsely arrested.

** From the same series, [[QuirkyMinibossSquad Jackal and Hyena]]. At least Demona has ''[[FreudianExcuse/WesternAnimation reasons]]'' for being as whacked as she is-- these two just seem to kill people/hurt people/blow stuff up [[ForTheEvulz for the thrill of it]] ([[PsychoForHire and the paycheck too-- but mostly the thrill]]).

** Sideshow Bob started to qualify for this when his attempts to [[WouldHurtAChild kill Bart]] included trying to have him ''cremated alive'' and when he visibly ''removed his cellmate's face and cut off his own''. He also ties up Bart while singing casually about wanting to [[EyeScream gouge out Bart's eyes]]. And then there's the "Treehouse of Horror XXVI" segment "Wanted: Dead, Then Alive" which has several moments that are genuinely disturbing. First, Sideshow Bob finally kills Bart. And it's not an over the top, comically ridiculous death, but fairly realistic. Bart gets harpooned through the heart, and since that doesn't immediately do the trick, Bob RETRACTS the harpoon and RIPS HIS HEART OUT. He then tears out Bart's large intestine and dances around with it while singing about how happy he is that Bart's dead before using it to tie his corpse to himself like a harness. It's also then revealed that Bob has kept Bart's corpse as it starts to decompose, eventually stuffing him in a compartment in the wall, even talking to him and playing golf with his body like he was alive. To make it worse, Bob revives Bart and then kills him again in various other ways—including getting him mauled by a lion and bludgeoning him with a sledgehammer while he's still conscious.

* ''[[WesternAnimation/TheLoudHouse Characters/LuanLoud]] on April 1st. If you're with the Louds on April 1st after the events of Silence of the Luans, no joke, [[GodHelpUsAll Good god have mercy on you]].