Generation Iron is a 2013 American documentary film which follows the world's leading professional bodybuilders as they train and compete for the 2012 Mr. Olympia. Considered to be a spiritual sequel to the 1977 documentary Pumping Iron, the film gives access to the lives of the top seven bodybuilders in the sport, including Phil Heath, Kai Greene, Branch Warren, and Dennis Wolf. The film is narrated by Mickey Rourke, and features appearances by Arnold Schwarzenegger, Lou Ferrigno, and Jay Cutler.