Doctor Doom's reign of terror is just beginning. Here's what to know about his role in the upcoming movie, 'Avengers: Doomsday,' including cast, release date and potential plot.

A good chunk of Doomsday could focus on a clash between Avengers and X-Men with RDJ’s Doom cackling in the background, with a kidnapped Franklin by his side. The premise certainly gives the Fantastic Four a reason to breach their multiversal walls and zip over to 616 to meet the New Avengers.