Marvel announced on its website Thursday Spader will play the main baddie Ultron.
"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.' The Emmy Award-winning actor will play Ultron in the Avengers' much anticipated return to the big screen from writer-director Joss Whedon," a message on the website said.
Spader's most recent projects have included the films "Lincoln" and "Secretary," as well as the TV series "The Office," "Boston Legal" and "The Practice."
2014: The Year in Music [PHOTOS]