William Sadler is rumored to have joined writer/director Shane Black's Iron Man 3 according to Latino Review, It seems the great character actor from films like The Shawshank Redemption, The Green Mile, Die Hard 2, and The Mist showed up for a costume fitting.
The story is based on the popular six-issue mini series "Extremis" by Warren Ellis--the film's events take place after The Avengers. The plot involves the spread of a virus through nanobots.
Deets of Sadler's role are unknown at this point.
Robert Downey Jr. Gwyneth Paltrow, Don Cheadle,Jon Favreau Ben Kingsley Guy Pearce Rebecca Hall James Badge Dale Ashley Hamilton and Chinese superstar Andy Lau also star.
Production has begun in Wilmington, North Carolina under the codename "Caged Heat"