Avengers: Age of Ultron will bring the Marvel Universe's biggest heroes together again to face one of their biggest villains. The film will feature the return of Robert Downey Jr., Chris Hemsworth, Chris Evans, Mark Ruffalo, Samuel L. Jackson, Scarlett Johansson, Jeremy Renner, Clark Gregg and Cobie Smulders. Emmy Award-winning actor James Spader will play the film's central villain Ultron. It will also introduce Aaron Taylor-Johnson and Elizabeth Olsen into the franchise as the brother-sister duo Quicksilver and Scarlet Witch as well as Thomas Kretschmann as the villainous Baron Wolfgang von Strucker and Paul Bettany as The Vision.
Avengers: Age of Ultron arrives in theaters May 1, 2015.