A shocking Avengers: Doomsday theory explains how Robert Downey Jr.'s Doctor Doom can save the world, becoming the hero of his story, like Thanos did.

For Downey Jr.’s Doctor Doom to unseat Brolin’s Thanos as the MCU’s best big bad, he must, first and foremost, distinguish himself from Iron Man.

Robert Downey Jr. is returning to the MCU as Doctor Doom, and he'll be joined by plenty of familiar faces, including the Fantastic Four, the Thunderbolts, and even a few X-Men.

3 Marvel Villains Who Could Have Replaced Thanos Better Than Doom Marvel Studios had plenty of options to offer a welcome change of pace after the Avengers defeated Thanos, instead of Doctor Doom.

Now, in Deadpool Kills the Marvel Universe One Last Time #4, he'll face one of his toughest challenges ever as he battles the Doctor Doom of an alt-reality. But he's not totally unprepared.

Casting Robert Downey, Jr. as Doctor Doom Was Kevin Feige’s Decades-Long Dream by Michael Walsh Mar 24 2025 • 7:56 AM ...