Robert Downey Jr. Returns as MCU's Doctor Doom

Robert Downey Jr. is officially returning to the Marvel Cinematic Universe, but not as Iron Man—he'll be playing Doctor Doom under the direction of the Russo Brothers. Many fans had accepted that Downey Jr. was finished with the MCU following Tony Stark's heroic death in Avengers: Endgame. The actor has justified his return by expressing confidence in portraying what he believes will be the best villain in the MCU. This casting represents a major surprise reveal by Marvel Studios for the franchise's future.