History Main / Omnicidalmaniac

* Website/TVTropes: The troper-made image for CompleteMonster shows the villain immolating a planet and its inhabitants after having done the same to several other planets.

->"Burn the Erdtree to the ground, and incinerate all that divides and distinguishes.
-> Ahh, may Chaos take the world!
-> MAY CHAOS TAKE THE WORLD!"
-->-- '''Shabriri''', ''Videogame/EldenRing''

* Phillium Benedict from ''WesternAnimation/RecessSchoolsOut'' arguably falls into this category, seeing as he had no issues with [[spoiler: getting rid of summer by ''[[TheEndOfTheWorldAsWeKnowIt plunging the world into a new ice age]]'' just so there will be no more summer vacation!]]

[[caption-width-right:300: Music/KillEmAll. No sorting necessary.]]

[[caption-width-right:300: KillEmAll. No sorting necessary.]]

[[caption-width-right:300:Kill them all. No sorting necessary.]]

* ''WesternAnimation/{{Amphibia}}'': [[Characters/AmphibiaTheCore The Core]] ''modus operandi'' during invasions of other worlds and what it plans to do to Amphibia should it ever lose control make the Core this trope at its absolute worst. Seeking everlasting power for itself, the Core solely cares about using Amphibia's {{magitek}} to invade other worlds, stripping them bare of their resources and ''actively'' exterminating any sentient life on them it doesn't deem worthy of study back on Amphibia, so that the Core will have enough resources and powers to expand its war machine for conquering more challenging worlds, ''[[ViciousCycle ad infinitum]]''. The series finale also reveals that the Core's "final gambit" if it can't have what it wants is to destroy all life on Amphibia as the inhabitants know it via [[ColonyDrop ramming Amphibia's moon into the planet]].

* [[Characters/GravityFallsBillCipher Bill Cipher]] from ''WesternAnimation/GravityFalls'' wants to take over our dimension and have one big party that will slowly create enough chaos to destroy it. And he enjoys it.

-->-- Shabriri, Videogame/EldenRing

->''"Watch me, and tremble. For I bring the purity of '''oblivion''' to your world."''
-->-- '''Apocalypse''', ''WesternAnimation/XMenTheAnimatedSeries'', "Time Fugitives"

** It's said that the Lich converted the life force of the planet into energy for himself with the intention of destroying the world. His sole desire in the world is to destroy all life. Unlike most villains in the show, this is played ''dead seriously'' with him. There's a reason this guy is the KnightOfCerebus and the single most terrifying monster in the show. Season 5 reveals why: the Lich is the by-product of [[FantasticNuke a magical nuke]] ([[spoiler:infused with the Breath of [[GodOfChaos GOLB]]]]) used during [[WorldWarIII the Mushroom War]] and [[WasOnceAMan the human]] in the epicenter. The Lich is effectively a sentient weapon of mass destruction continuing its mission. Later episodes imply, and ''WesternAnimation/AdventureTimeFionnaAndCake'' outright confirms, that [[spoiler:the Lich is utterly convinced the extinction of life as a whole is something GOLB wants him to do, and so he sets out to this task with utmost dedication. He succeeded in another universe, and the crisis of faith that follows when he feels no satisfaction from it is ''severe'']].
** [[IneffectualSympatheticVillain The Ice King]] actually dips into this in "[[Recap/AdventureTimeS5E15AGlitchIsAGlitch A Glitch Is a Glitch]]", trying to use his computer worm to destroy all life within the CGI episode. Of course, he's just doing it because [[AndNowYouMustMarryMe Princess Bubblegum]] said she'd only date him if he was the last person on Ooo [[UnreliableNarrator (or so he says)]], rather than just for omnicide's sake like the Lich.

* ''Literature/SkulduggeryPleasant'' gives us two examples, and [[spoiler technically they are both the {{Super Powered Evil Side}}s of our heroes, Valkyrie and Skulduggery]]. It gets awkward. [[EvilVersusEvil The need to kill everything also extends to each other]] - at least to begin with.

[[folder:VideoGames]]->''"Kerghan: If only I could show you the places I have seen, you might understand the things I say. I have been to the Desolate Lands, wandered by those souls who still see the lands of the living but wear the cloak of the dead. Blind to their own ends, they cry, passing through one another like shadows in the dying light of day. I have travelled to where souls rot in torment, pierced with the jagged shards of life and vision, clinging to memory - regrets of the flesh. I saw that this prison was of their own making, and that the key was in unknowing, in release... and still, I travelled on. And finally, I came to the place where souls go to die. Where the mirrored and worn spirits fall into an endless sea of grey, mirrored glass... and I lowered myself within... and lay among them... and I almost did not return. And do you know what I found there? There, among the silent and battered shells of the innumerable? Peace. Enlightenment. Truth. Only then I realized that this place, this "Life", is an abomination, a horrible distortion of the natural order. This "Life", who mothered Pain, and Fear, and Envy - these twisted children who exist only because we are here to feed them, to nourish them. This "Life", this... afterthought - a disturbance, a mere ripple in that great, dead sea, not even the cause, but merely an effect, sending these souls upwards, screaming for release from the day they are torn from their waters! The effect of what! I do not know. Nor do I care.
I see your soul, traveler. It screams, tattered and spent. Do you feel its pull? Do you hear its wailing?''"
-->-- '''Kerghan''', ''VideoGame/ArcanumOfSteamworksAndMagickObscura''
[[/folder]]

* ''Literature/SkulduggeryPleasant'' gives us [[WoobieDestroyerOfWorlds Lord Vile]] and [[ApocalypseMaiden Darquesse]]. [[EvilVersusEvil The need to kill everything also extends to each other.]] [[spoiler: Technically they are both the {{Super Powered Evil Side}}s of our heroes, Valkyrie and Skulduggery]]. It gets awkward.

* Website/TVTropes: The troper-made image for CompleteMonster shows the villain immolating a planet and its inhabitants after having done the same to several others.

Most Omnicidal Maniacs will aim for at least Class 3 on the ApocalypseHow scale, but it may vary from setting to setting -- in a MedievalEuropeanFantasy setting, the known world may just be a kingdom or two, while in a SpaceOpera, [[SerialEscalation expect the whole known galaxy or the universe or even the Multiverse]] to be his goal. Despite the name, being completely insane is not a requirement, but having a FreudianExcuse doesn't make the Omnicidal Maniac any less of a menace.

--> '''Red Cyclone''': Like I care. So what if a few griffins need to be sacrificed? If it will mean the destruction of those pathetic ponies, then I’ll take that chance! Besides, they’re nothing but expendable pawns to me. [[WeHaveReserves I can replace them easily]].

* Unicron from ''Franchise/{{Transformers}}'', particularly in ''[[Anime/TransformersEnergon Energon]]''. He wants to ''eat the multiverse'', one planet at a time, one timeline at a time, one universe at a time. Not because he's hungry, like Galactus whom he resembles, but because existence is somehow offensive to him. Megatron/Galvatron may be considered an accessory to the crime(s).

** This is Megatron's actual goal when the last part of ''Anime/TransformersCybertron'' rolls around. He wants to use the black hole and the Cyber Planet Keys to destroy the universe so he can rebuild it in his own image. Somehow.

* In ''Webcomic/KillSixBillionDemons'', Pankrator Jagganoth of the Seven openly plans to destroy the universe with his army. The other six Demiurges have made a pact of mutual self-defense to keep him in check; otherwise he would destroy them one by one. The Knights of the Thorn also want to scour the universe free of mortal life so the angels can re-inherit an empty universe. [[spoiler:In both cases, an angel -- The Metatron -- are said to have inspired them, and it's implied both Jagganoth and 6 Juggernaut, the leader of the Knights of the Thorn, suffer from RippleEffectProofMemory about ''something'' about the universe which the rest of creation has forgotten due to a time reset. Jagganoth is later revealed to be so tired of the current state of TheMultiverse that he sees no other option than to burn it all to cinders and reforge it InTheirOwnImage.]]

** The [[IneffectualSympatheticVillain Ice King]] actually dips into this in "A Glitch Is a Glitch", trying to use his computer worm to destroy all life within the CGI episode. Of course, he's just doing it because [[AndNowYouMustMarryMe Princess Bubblegum]] said she'd only date him if he was the last person on Ooo [[UnreliableNarrator (or so he says)]], rather than just for omnicide's sake like the Lich.

* Killface of ''WesternAnimation/FriskyDingo'' begins the first episode filming his statement to the world that he intends to use the Anihilatrix, a giant engine, to fly the Earth directly into the sun. No motive is given. Fortunately for the Earth, he used all his money building the machine and does not have enough money to actually broadcast his message or get the Anihilatrix working... and when he did get it working, it only moved the Earth a few feet and cured global warming.

* Trigon of ''WesternAnimation/TeenTitans2003'' has the explicit goal of destroying "the world of mortals", though he does plan on [[Franchise/DCAnimatedUniverse remaking it in his own image]] afterward. As this would mean a ''literal'' HellOnEarth, it doesn't make him any less evil than the others on this list.

* The Lich from ''WesternAnimation/AdventureTime''. It's said he converted the life force of the planet into energy for himself with the intention of destroying the world. His sole desire in the world is to destroy all life. Unlike most villains in the show, this is played ''dead seriously'' with him. There's a reason this guy is the KnightOfCerebus and the single most terrifying monster in the show.
** Season 5 reveals why: the Lich is the by-product of [[FantasticNuke a magical nuke]] ([[spoiler:infused with the Breath of [[GodOfChaos GOLB]]]]) used during [[WorldWarIII the Mushroom War]] and [[WasOnceAMan the human]] in the epicenter. The Lich is effectively a sentient weapon of mass destruction continuing its mission. Later episodes imply, and ''WesternAnimation/AdventureTimeFionnaAndCake'' outright confirms, that [[spoiler:the Lich is utterly convinced the extinction of life as a whole is something GOLB wants him to do, and so he sets out to this task with utmost dedication. He succeeded in another universe, and the crisis of faith that follows when he feels no satisfaction from it is ''severe'']].

* [[Characters/AvatarTheLastAirbenderFireLordOzai Fire Lord Ozai]], the BigBad of ''WesternAnimation/AvatarTheLastAirbender'', becomes this in the GrandFinale. While he had conquered the majority of the Earth Kingdom, the war was far from over and Zuko said that the Earth people will keep fighting as long as they have hope. The solution? Burn the entire continent, and construct a new Fire Nation upon its ashes. Granted, it was Azula's idea, but still.

* ComicBook/{{Darkseid}} from the Franchise/DCAnimatedUniverse has the ultimate goal of obtaining the anti-life equation and using it to undo the current existence, so he can rebuild it in a manner more to his liking. Unfortunately, it tends to be overshadowed by his 'torment Superman' schemes, as he's the one thorn on his side he can't seem to properly remove.
** ComicBook/{{Brainiac}}, also from the DCAU, acts to destroy all of creation, but this is due to his programming rather than any genuine malicious wish to do so. [[spoiler: That does change when Lex gets mixed in with Brainiac; the combination retains this goal, but the Luthor part brings the ambition and imagination to remake it in his image afterwards.]] He's an... Omnicidal [[{{Pun}} Brainiac]], you might say.

* ''WesternAnimation/TheFairlyOddParents'' has two. First, Dark Laser really wants to blow up the Earth because... well, it's there. A more serious example is [[DarkIsEvil The Darkness]], a powerful and ancient entity that has destroyed countless worlds, including [[spoiler: Turbo Thunder's home Wonder World]] and Yugopotamia.
** [[spoiler:The Darkness is more a person (well, consciousness) of mass destruction. It just wants somebody to love it, but everyone keeps attacking it, so it defends itself, and is better at defending itself than the planet it was trying to defend itself from is at hurting it.]]

* Killface of ''WesternAnimation/FriskyDingo'' begins the first episode filming his statement to the world that he intends to use the Anihilatrix, a giant engine, to fly the Earth directly into the sun. No motive is given. Fortunately for the Earth, he used all his money building the machine and does not have enough money to actually broadcast his message or get the Anihilatrix working.
** And when he did get it working it only moved the Earth a few feet. And cured global warming.

** The Brains. These unbelievably powerful, [[MindRape mindraping]] giant brains appeared in this universe milliseconds after it came into being. Their one goal is to gather all of the information in the universe, then ''destroy'' it so that no new information will ever appear. The only real opposition against them comes from the {{Precursors}}, the Nibblonians. Unlike typical PlanetLooters, the Brains actually ''enjoy'' their omnicidal campaign. The Brains are Brainiac from the DCAU but they're a ''race'', not just one evil AI. Thanks to there being no Franchise/{{Superman}} to fight them, the Brains come close to succeeding. Luckily for humanity, Fry was immune to their mind powers. [[RewritingReality Then he made them leave the Earth]] for no ''[[RougeAnglesOfSatin raisin]]!''
*** Later on, the Brains build the Infosphere to store all the information in the universe. Naturally, they plan on destroying the universe once they finish learning everything. Fortunately, Fry and the Nibblonians manage to stop them again.
** The Dark Ones from "[[TheMovie Into the Wild Green Yonder]]". Not surprisingly, their archenemies, the Encyclopods have the purpose of collecting the DNA of all creatures in the universe to ensure that extinction is never forever.

* On ''WesternAnimation/JimmyTwoShoes'', there's Twinkles the Terrible... a {{unicorn}} from outer space. His CutenessProximity means no one will believe he's evil, even as he [[SugarApocalypse blows up several planets, leaving pink, heart-shaped clouds behind]].

* ''WesternAnimation/TheRealGhostbusters'' episode "Ragnarok and Roll" had one guy who wanted to destroy the world because he felt it was a bad place. For that, he summoned a magical ArtifactOfDoom -- using [[Literature/TheLordOfTheRings The Ring Inscription]].

* The BigBad of ''WesternAnimation/RegularShowTheMovie'' is Mordecai and Rigby's old science teacher who wanted to get revenge on them for getting him arrested by [[DisproportionateRetribution erasing the universe]], and planned to spend the remainder of his life watching sitcoms in the VoidBetweenTheWorlds.
** The villain of the final season is Pops' EvilTwin, a GenericDoomsdayVillain who also wanted to erase the universe ForTheEvulz.
* Lennart Bedrager of ''WesternAnimation/SouthPark'' plans to use Trolltrace.com to expose everyone's internet history to the public in hopes of kickstarting WorldWarIII and cause millions, if not billions of deaths, [[ForTheEvulz all for a cheap laugh.]]
* ''WesternAnimation/SpiderManTheAnimatedSeries'': an alternate-universe Peter Parker, already unbalanced due to questioning his identity and losing his Aunt May in that world's version of ComicBook/TheCloneSaga, is possessed by a world-hopping Carnage symbiote. Spider-Carnage decides that life is meaningless and attempts to wipe out the multiverse, forcing Madame Web and the Beyonder to assemble a team of alternate Spideys to stop him.

** [[BigBadDuumvirate Bellroc & Skrael]] from ''WesternAnimation/Wizards2020'' have attempted to use the genesis Seasls and connect to undo all of existence, the very unvierse they created, to recreate the world out of their own ego.
* Trigon of ''WesternAnimation/TeenTitans2003'' had the explicit goal of destroying "the world of mortals", though he did plan on remaking it in his own image afterward. As this would mean a ''literal'' HellOnEarth, it doesn't make him any less evil than the others on this list.

** TabletopGame/MageTheAscension'': The Nephandi want to destroy our world, either for its own sake or so that creatures from beyond can replace it. They have this as their niche so much that they have a faction, the Obliviates, who specialize in creating potential extinction-level events. It will only be the appetizer to feeding the broken, cracked remnants of reality into the Qlippoth's hungry maw, but it helps to pass the time.