By the end of next year, Robert Downey Jr. will have done both when he finally arrives in theaters as the leader of Latveria and metal-plated bad guy, Victor von Doom. Bringing back the star power and charisma he let rip as Iron Man and using it for evil in the franchise he helped build,

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.