With its huge ensemble cast, shocking character returns, and the introduction of the Fantastic Four, Avengers: Doomsday is looking to be one of the most ambitious Marvel movies ever. The addition of Robert Downey Jr. as Doctor Doom brings a new twist that no one anticipated.

The film's cast members include Chris Hemsworth as Thor, Anthony Mackie as Captain America, Sebastian Stan as Bucky Barnes, Letitia Wright as Shuri, Paul Rudd as Ant-Man, Wyatt Russell as U.S. Agent, Tenoch Huerta Mejía as Namor, Simu Liu as Shang-Chi, Florence Pugh as Yelena Belova and Danny Ramirez as Joaquin Torres.