Why Can Ultron Use The Infinity Stones Outside His Own Universe?


It’s long been assumed that it is impossible to use the Infinity Stones, or at least the comic book version of them, freely throughout the Marvel multiverse.

This has been the presumption since at least 2003, when Darkseid obtained the Infinity Gauntlet during the “JLA/Avengers” comics crossover event, but tossed it aside after realizing the stones didn’t work in his universe. The topic was also referenced in Jonathan Hickman’s 2018 “Fantastic Four” run, which saw some members on the Council of Reeds unable to use Infinity Gauntlets obtained in their own parallel universes.

Marvel’s “The New Avengers” also mentions the stones not working “outside their native universe.” However, it looks like this rule may not apply to the Marvel Cinematic Universe.

Read this: What If…? Episode 8 Major Easter Eggs


Indeed, Marvel’s “What If…” has officially turned most comic book fans’ idea of how the Infinity Stones work upside down with its eighth episode, “What If…Ultron Won?” The Disney+ series’ latest installment reveals that the cosmic gems have the potential to be far more powerful than fans might think, depending on what universe they’re in and, of course, who is in control of them.

Ultron: The Infinity Stones

Why can Ultron use the Infinity Stones outside his own universe?

“What If…?” Episode 8 takes place not long after the events of 2015’s “Avengers: Age of Ultron,” but is set in a timeline where that film’s titular villain has actually won and laid waste to the entire galaxy. Notably, the genocidal AI is able to do that latter feat by killing Thanos and taking control of all six of the Infinity Stones just moments after the Mad Titan’s arrival on Earth.

Victorious and bored, Ultron ends up finding a new purpose after he learns about the existence of the multiverse. Reaching a higher level of consciousness, Ultron is able to see and hear The Watcher, and becomes intent on spreading his vision of “peace” throughout the entire multiverse.


Read this: Age Of Ultron Similarities In What If…? Episode 8

The episode eventually sees him and The Watcher engaging in a battle that spans entirely different timelines and universes. “The boundaries of the multiverse are irrelevant to beings like you and me,” Ultron tells The Watcher during their fight. “I didn’t evolve by staying inside the lines.”


As some Marvel fans noted on Reddit, the episode makes it explicitly clear that Ultron can use his version of the Infinity Stones outside of their original, home universe. Whether that means every version of the stones that exist in the MCU can do that, or if some (like the Stones featured in the comics) can’t, remains unclear.


Either way, it’ll be interesting to see how Ultron’s considerable power stacks up when he inevitably faces whatever superhero team it is that The Watcher begins assembling at the end of “What If…?” Episode 8.


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