Audiences may struggle to see Robert Downey Jr. as a villain in Avengers: Doomsday. Downey Jr.'s acting style will need to change to fit the role of Doctor Doom. Doctor Doom should kill an MCU hero early in the film to establish him as a serious threat.

Robert Downey Jr.'s return to the MCU as Doctor Doom may not end after his appearance in Marvel Studios' long-awaited Avengers: Secret Wars.

Even Doctor Strange’s all-seeing Eye of Agamotto didn’t see it coming. During its San Diego Comic-Con presentation in July, Marvel Studios announced that Robert Downey Jr. is returning to the Marvel Cinematic Universe — not as Iron Man,