It’s been two months since it was announced that Robert Downey Jr. would return to the Marvel Cinematic Universe, now as Doctor Doom in both Avengers: Doomsday and Avengers: Secret Wars and likely The Fantastic Four: First Steps. While we still have some time until Downey Jr.’s Doctor Doom makes his debut, speculation has already begun on what comics will influence the MCU version of the character. While he will be his own unique version, the MCU does like to pull from a wide array of comics to influence and inspire their adaptations.