The latest trailer for Avengers: Doomsday not only gave audiences a better look at Robert Downey Jr.'s Doctor Doom, but also revealed a new element to what motivates him. In the trailer, Doom says, "You have all lived stolen lives. But now you must give them back." Who this is directed at within the context of the film is unknown, but Marvel's marketing department made sure the trailer cut to various MCU characters so that the line remains compellingly ambiguous.