Marvel's Shocking Casting: Robert Downey Jr. to Portray Dr. Doom

At San Diego Comic-Con, Robert Downey Jr. announced his return to the MCU as the villain Doctor Doom in the upcoming Avengers movie

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The actor will return as Doctor Doom in "Avengers: Doomsday," directed by the Russo brothers, hitting theaters in May 2026

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Downey appeared at the event wearing Dr. Doom's mask and a green cloak

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The Russo brothers called his role "proof of the unimaginable possibilities in the Marvel multiverse"

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He posted a photo on Instagram with the caption, "New mask, same task"

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