History HeroKiller / MarvelUniverse

* ComicBook/CaptainAmerica villain Crossbones is one for the BadassNormal set, having ratcheted up a fair bodycount over the course of his career. He's also the one who fired the shot that killed Cap at the end of ''Civil War'' firmly cementing his reputation as one of these.
* Comicbook/CaptainBritain villain the Fury is a powerful robot created by Mad Jim Jaspers to destroy all superheroes, the Fury's adaptive abilities and self repairing mechanisms made it so powerful that it wiped out all superheroes in it's home dimension of Earth-238.
* ComicBook/{{Deadpool}} in ''ComicBook/DeadpoolKillsTheMarvelUniverse''. Guess who kills him -- [[spoiler:Deadpool]].
** In a similar vein, "ComicBook/ThePunisherKillsTheMarvelUniverse", which instead ends with ComicBook/ThePunisher [[spoiler:committing suicide]].
* [[Characters/MarvelComicsDemons Damion Hellstrom]] and [[Characters/BlackWidowEnemies Nekra Sinclair]] share responsibility in the death of [[ComicBook/Druid1995 Dr. Druid]] -- Hellstrom being the mastermind and Nekra being the triggerwoman.
* In the same vein as Galactus, the Celestials also scare the crap out of everyone whenever they show up. Fortunately, they don't go around eating planets left and right. Unfortunately, they have a nasty habit of "judging" worlds they have seeded life on (which is most of them), and executing them if they don't like what they see. Yes, they execute ''entire planets''.
** The Beyonders are even ''worse'' as they managed to [[spoiler:''kill all of them.'']]
* Comicbook/{{The Korvac Saga}}: Korvac slaughters most of the Avengers and Guardians of the Galaxy without mercy, though he resurrects them all before he dies.
* MadeOfExplodium hitman Nitro is notable because he's a low-level C-lister who doesn't even have a nemesis. Yet he is the man who killed the original ComicBook/{{Captain Marvel|MarvelComics}}, Mar-Vell[[note]]in his debut, no less, though Mar-Vell's death was only a side-effect as the tank containing the gas that ultimately caused Mar-Vell's death sprung a leak as a result of Nitro trying to escape using his explosive powers and it took time for the gas's effects to kill Mar-Vell[[/note]] and most of the ComicBook/NewWarriors, both major events, and in a world where DeathIsCheap, Mar-Vell and Microbe's have ''stuck''.
* In ''ComicBook/SpiderGirl'' Roderick Kingsley, the original Hobgoblin, becomes this after coming out of retirement. He effortlessly beats down Spider-Girl ''and'' her allies with minimal help, kills [[spoiler:the Venom symbiote]], wrecks Black Tarantula's organisation, and gets away.

* ComicBook/{{Thanos}}. In ''ComicBook/TheInfinityGauntlet'' he literally killed half the population of the universe including many superheroes, and later on in the storyline the surviving heroes would try to stop him, only for him to kill most of them effortlessly (Though this was all undone). At another he literally killed the entire population of the universe including every superhero. [[spoiler: In fact, the conflict in ''ComicBook/CivilWarII'' is caused by him killing ComicBook/WarMachine.]]
* ComicBook/UltimateMarvel:

* ComicBook/{{Ultron}}, in the Marvel Universe, a genocidal robot who has wiped out an entire nation on his own. ''Massively'' on his own, in fact; on that occasion, he ''turned himself into an army''. And after he had killed everyone in the country, he turned their corpses into cybernetic combat drones to fight the heroes.
** Later, he tried to pull the same stunt again, only this time he did it with a ''galaxy''. He also cyber-enslaved a slew of cosmic superheroes -- and villains, including the Space Knights of Galador, Gamora (the adopted daughter of ''Thanos''), Drax the Destroyer, Xemnu the Titan, Shatterax, Ronan the Accuser, Nova-Prime and the Super-Adaptoid, several of which qualify as Hero Killers in their own right.
*** And later, he returned in "Avengers" in such a way that the heroes - the most powerful hero team in the world, mind -- basically were "Oh, no... not ''again''!"
** ''ComicBook/AgeOfUltron'' opens with [[GreatOffscreenWar the unthinkable having already happened]]. Ultron has managed to conquer the Earth, and in the process, killed off the vast majority of ComicBook/TheAvengers, the ComicBook/XMen, and the ComicBook/FantasticFour. His victory is all but assured until ComicBook/{{Wolverine}} and Sue Storm travel back in time and slam the ResetButton. ''Hard''.
** And finally, ''ComicBook/UltronForever'' is set in another timeline where Ultron killed almost every superhero on Earth. Bonus points for [[TheAssimilator wiring up the Avengers' bodies and making them into his personal guard.]]

* From Franchise/SpiderMan's universe:

** Kraven the Hunter's wife Sasha was responsible for the murder of Mattie Franklin (Spider-Woman at the time) and Kaine during the ''Grim Hunt'' storyline. (Julia Cornwell, who was going by the name Arachne at the time, was also a target, but was saved by Spider-Man.)

* [[Characters/MarvelComicsDemons Damion Hellstrom]] and [[Characters/BlackWidowEnemies Nekra Sinclair]] share responsibility - TV Tropes for the death of [[ComicBook/Druid1995 Dr. Druid]] -- Hellstrom being the mastermind and Nekra being the triggerwoman.

** ComicBook/NormanOsborn's most well-known murder was that of Gwen Stacy, but he has nearly killed a few super-powered adversaries and ''did'' kill Ben Reilly, Peter's clone.

*** One of Syndicate's heads was blown off by William Stryker Jr. Since she died off-panel and wasn't in the main series, it's assumed Stryker's forces also killed Psylocke.

*** Among the deaths caused by Magneto during the tidal wave that the story opens on are Franklin Richards, Angel, Beast, Dazzler, and Daredevil. Following issues also sees Magneto personally kill Professor Xavier and Wolverine.
*** While it's unclear if she was another causality of the flood or the Blob found, killed, and ate her, the Wasp still died thanks to a member of the Brotherhood.
*** Sabretooth kills Angel in the climax.

*** One of Syndicate's heads was blown off by William Stryker Jr.

** Among the deaths caused by Magneto during the tidal wave that ''ComicBook/{{Ultimatum}}'' opens on are Angel, Beast, and Dazzler. Following issues also sees Magneto personally kill Professor Xavier and Wolverine.

* MadeOfExplodium hitman Nitro is notable because he's a low-level C-lister who doesn't even have a nemesis. Yet he is the man who killed ComicBook/CaptainMarVell[[note]]in his debut, no less, though Mar-Vell's death was only a side-effect as the tank containing the gas that ultimately caused Mar-Vell's death sprung a leak as a result of Nitro trying to escape using his explosive powers and it took time for the gas's effects to kill Mar-Vell[[/note]] and most of the ComicBook/NewWarriors, both major events, and in a world where DeathIsCheap, most of his kills have ''stuck''.

* Nitro, the MadeOfExplodium hitman from Marvel Comics, is notable because he's a low-level C-lister who doesn't even have a nemesis. Yet he is the man who killed ComicBook/CaptainMarVell[[note]]in his debut, no less, though Mar-Vell's death was only a side-effect as the tank containing the gas that ultimately caused Mar-Vell's death sprung a leak as a result of Nitro trying to escape using his explosive powers and it took time for the gas's effects to kill Mar-Vell[[/note]] and most of the ComicBook/NewWarriors, both major events, and in a world where DeathIsCheap, most of his kills have ''stuck''.

* ComicBook/{{Thanos}}. The Mad Titan killed many Marvel heroes effortlessly in ''ComicBook/TheInfinityGauntlet''. At one point he literally killed half the population of the universe including many superheroes. At another he literally killed the entire population of the universe including every superhero. [[spoiler: In fact, the conflict in ''ComicBook/CivilWarII'' is caused by him killing ComicBook/WarMachine.]]

** And finally, ''ComicBook/UltronForever'' is set in another timeline where Ultron killed almost every superhero on Earth. Bonus points for [[TheAssimilator wiring up the Avengers' bodies and making them into his personal guard.]]
* ''ComicBook/TheWalkingDead'': The Governor. Rick and his group are terrified of him, and whenever he shows up, there is a good chance people will die. [[spoiler: He's responsible for the deaths of Axel, Billy, Lori, and Judith.]] In addition, he personally kills [[spoiler: Tyreese, Hershel, Patricia, and Alice, and cuts off Rick's right hand.]]]
** Negan marks his first appearance by bashing [[spoiler: Glenn]]'s skull in with a baseball bat coated in barbed wire.