Watch out, Superman — General Zod is back! "Boardwalk Empire" star Michael Shannon has officially been cast as the Kryptonian villain in director Zack Snyder's upcoming "Man of Steel," reports Deadline. The actor joins Henry Cavill as Superman, Amy Adams as Lois Lane, and Diane Lane and Kevin Costner as Clark Kent's parents Martha and … Continue reading Michael Shannon to play General Zod in 'Man of Steel'