Robert Downey Jr. Confirmed as MCU's Doctor Doom

Robert Downey Jr. has been officially confirmed as Doctor Doom in the Marvel Cinematic Universe, with his first appearance occurring in the post-credits scene of The Fantastic Four: First Steps, where he interacts with Franklin Richards. Vanessa Kirby and director Matt Shakman confirmed Downey's presence on set for this pivotal scene. Marvel Studios is reportedly planning for Downey to continue as Doctor Doom beyond Avengers: Secret Wars, and theories suggest his story may intersect with major arcs like Secret Wars and potentially involve characters such as Mephisto. Downey has teased possible comic inspirations, including Secret Wars and Iron Man: Legacy of Doom, hinting at a Doom vs. Iron Man scenario. Fan reactions to his casting were mixed initially, but anticipation has grown as cast and producers praise his commitment. Doctor Doom is now being positioned as the central villain for Phase 6 of the MCU.