10 Alternate Versions Of Marvel Heroes That Are Straight-Up Villains

Published Sep 13, 2026, 11:00 PM EDT

Emedo Ashibeze is a tenured journalist and critic specializing in the entertainment industry. Before joining ScreenRant in 2025. he wrote for several major publications, including GameRant. 

Marvel Comics has built an empire on transformation: characters who evolve, fracture, and sometimes shatter entirely under the weight of their own power. Moreover, alternate universes, particularly the Ultimate line, the multiverse sagas, and event-driven crossovers, have become some of the most referenced storytelling devices in the medium, appearing in everything from major crossover films to fan debates.

To date, Marvel's multiverse continues to captivate fans worldwide, even as some purists argue too many variants muddle the core continuity. The heroes audiences know from the movies and mainstream continuity have skeletons in their closets when it comes to alternate-reality storytelling in comic books.

10 The Maker

Fans who only know Reed Richards as Marvel's foremost family man might be shocked by his Ultimate Universe counterpart. Earth-1610's Mr. Fantastic went insane after learning his reality faced total annihilation, and rather than save it, he faked his death, murdered his family, and abandoned heroism altogether.

As the Maker in Ultimate Comics: Ultimates, Reed builds the Children of Tomorrow, constructs an accelerated-time dome in Germany, and detonates an antimatter bomb on Washington D.C., that kills the President and Congress. He's since jumped between universes, stealing Infinity Gems during Cataclysm, betraying his 616 counterpart during Secret Wars, and experimenting on Venom's Eddie Brock.

9 Dark Beast

Hank McCoy of the X-Men isn't usually the first name that comes to mind when listing Marvel’s most notorious villains. Yet, under the alias Dark Beast, he stands among the most disturbing figures in Marvel history, first appearing in X-Men: Alpha #1 at the start of the “Age of Apocalypse.”

In that dystopian timeline, Charles Xavier's early death leaves McCoy without a mentor to steady him. Raised in a world with zero space for empathy, he serves as chief geneticist, running the Breeding Pens where he tortures mutants deemed unfit. He engineers the gene-spliced Infinite army for Apocalypse's conquest and experiments on himself to birth the monster he becomes.

8 Hydra Supreme Captain America

Captain America turning evil happens nowhere else but in an alternate timeline. Fans know this, but 2016's Avengers: Standoff made it terrifyingly real. When the sentient Cosmic Cube Kobik was manipulated into rewriting Steve Rogers's history, she created a cosmic double: a lifelong Hydra sleeper agent wearing the real hero's face.

During Secret Empire, Hydra Supreme executes a coup that turns the U.S. into essentially a fascist police state; one that locks heroes outside a planetary shield during an alien invasion, and orders the orbital vaporization of Las Vegas to crush resistance. He even weaponizes a Cosmic Cube-powered suit to try to rewrite reality, before the real Captain America returns to put him down.

7 Maestro Hulk

This future version of Bruce Banner first appeared in 1992's Incredible Hulk: Future Imperfect #1. And he's only gotten nastier since. Ruling the post-apocalyptic city of Dystopia as an absolute dictator, Maestro decorates his palace walls with the bodies of citizens who disobeyed him.

Maestro’s reign is built on betrayal as much as brute force. In other words, loyalty means nothing to him. He murders a revived Hercules the moment he’s challenged, hunts down the last surviving heroes and villains for sport (turning their weapons into trophies), and even poisons Doctor Doom the second their alliance stops being useful.

6 President Loki

President Loki wears a different disguise depending on the version. In the Vote Loki comic run, he's something arguably scarier: a corrupt presidential candidate. In one instance in the comics, he stages a false-flag Hydra attack to play the hero, secretly incites civil war in Latveria for leverage, and uses cult tactics to scam donors.

The MCU's Loki series gives mainstream fans more insight into the ruthless warlord he becomes, ruling a marauder faction in the Void. In the fifth episode, “Journey into the Mystery”, President Loki stages a hostile coup against Kid Loki and immediately backstabs his own ally the moment he's no longer useful.

No matter how he appears, President Loki proves that magic isn't required for him to be dangerous. His worst instincts are fully unleashed the moment he finds a platform. Give him an audience, and his words alone can cause absolute chaos.

5 Superior Spider-Man

Otto Octavius spent years losing to Peter Parker as Doctor Octopus. So, naturally, his solution was to steal Peter's body outright. Rebranding himself "Superior" Spider-Man (in the comic run of the same name), Otto turns New York into a surveillance state, deploying Spider-Bots and a private army out of Spider-Island.

Some of his atrocities include: publicly torturing minor villains like Vulture, punching Scorpion's jaw clean off, and executing a surrendering criminal named Massacre. Worse, he digs through Peter's most intimate memories of Mary Jane Watson, decides she is a distraction, and promptly (and coldly) cuts her out of his life. Fragments of Peter's conscience linger somewhere in there, but Otto's ego drowns them out completely.

4 Dreadpool

Just when fans thought Deadpool couldn't get any weirder, Marvel introduced his nihilistic doppelganger. Dreadpool, driven mad by Psycho-Man's manipulation and a horrifying realization that his own reality is a fictional product, decides the kindest thing he could do was kill everyone in it.

His Deadpool Killogy rampage sees him wipe out his home universe's heroes with brutal creativity, shrinking bombs to take out the Avengers and frying Professor X's mind. He then invades the "Ideaverse" to murder literary icons like Sherlock Holmes and Don Quixote, hoping to erase the very ideas that inspired superheroes in the first place.

Eventually, his madness drives him to turn against his own variants. He wages a chaotic war against versions of himself across the multiverse until Prime Earth's Deadpool finally puts him down for good.

3 Kid Miracleman

Johnny Bates is just an orphan when 1954's Project Zarathustra experiments turn him into a superhuman. The problem is that his adult alter-ego, Kid Miracleman, shares his mind and slowly becomes a domineering bully who spends decades hiding behind a corporate facade at Sunburst Cybernetics.

His cruelty starts small: murdering his own secretary for dropping coffee, before escalating into full catastrophe. In the legendary Miracleman #15, freed from Johnny's control entirely, he sacks London not once but twice, killing 40,000 people in the process. Even after his defeat, he resurfaces as "Nightmare Johnny" to haunt a resurrected Young Miracleman's dreams.

2 Superior Iron-Man

AXIS's morality-inverting spell was supposed to be temporary for most of Marvel's heroes. But Tony Stark found a way to make his evil turn stick. Superior Iron Man is Tony's darkest impulses unleashed, genius with zero conscience attached.

He exploits the somewhat toxic human-smartphone relationship by offering Extremis 3.0 as a "free app," gets all of San Francisco hooked, then charges $99.99 a day to withhold the withdrawal. Behind the scenes, he rubs hostile takeovers, blackmails rivals, and polices his empire with drone armies, all while casually discarding Pepper Potts and cruelly revoking Daredevil's restored eyesight.

When the Incursion Crisis (designed to wipe out creation as a grand experiment) finally catches up to him, he attempts to flee the inevitable end. Ultimately trapped, he died locked in a bitter fight against Captain America instead.

1 Onslaught

Some villains are born of pure evil, but Onslaught came from good intentions gone catastrophically wrong. Driven by a desperate desire to protect his X-Men, Charles Xavier telepathically erased Magneto's mind to end his terror once and for all. However, Magneto's dark rage and grief instantly fused with Xavier's own repressed darkness. This union spawned Onslaught, an entirely new psychic monster hiding secretly inside the Professor's head.

During 1996's Onslaught Saga, he hijacks Xavier's body, turns on the X-Men, and psychically tortures Jean Grey before kidnapping Franklin Richards and X-Man to fuel a plan for forced human unity. He seals off Manhattan with stolen Sentinels and nearly incinerates the city with a homemade sun; he is stopped only by a full-blown heroic sacrifice.