Every Clue That Tony Stark Was Always Doctor Doom

You know how when Kevin Feige and the Russo brothers announced that Robert Downey Jr. was playing Doctor Doom, they said Downy was the only guy who could play Doctor Doom in the Marvel Cinematic Universe? What did they mean by that? That could have just been a compliment to an actor who was so fundamental to the success of the MCU. But that also could have been a hint that for the story they were going to tell, Doctor Doom had to look exactly like Tony Stark, or maybe even that Tony Stark was Doctor Doom all along.

That’s the subject of our latest Marvel video. It’s all about something you might have heard of: The Tony Stark Adoption Theory. In the video below, we’ll explain what the theory is and how it could work within the already established continuity of the MCU, including events seen in Captain America: Civil War and Avengers: Endgame. Once you know where to look for the clues, they’re definitely there — and they could make things very interesting when Doctor Doom debuts in the upcoming Avengers: Doomsday.

READ MORE: The Weirdest Marvel Comics Ever Published

If you liked that video on all of the clues that Tony Stark was always Doctor Doom in the Marvel Cinematic Universe, check out more of our videos below, including our breakdown of the one scene that made the entire Marvel Cinematic Universe work, one on all of Marvel’s teases of their upcoming TV slate from New York Comic-Con, and one on the MCU characters that might get erased or reset during Avengers: Secret Wars. Plus, there’s tons more videos over at ScreenCrush’s YouTube channel. Be sure to subscribe to catch all our future episodes. The next big Marvel multiverse movie, Avengers: Doomsday , is scheduled to open in theaters on December 18, 2026.

Sign up for Disney+ here.