The 53-year-old actor ("The Office," "Lincoln") will take on the vicious role of Ultron, the film's starring villain.
Marvel released the details on their website Thursday.
James Spader will face off against Earth's Mightiest Heroes as the villain in Marvel's "Avengers: Age of Ultron," the sequel to 2012's record-breaking "Marvel's The Avengers."
Unfortunately, this news comes well in advance. Fans will have to wait until May 1, 2015 to see the comic book superhero team and Ultron battle it out on the big screen.