Christian Bale’s Legendary Transformation As Batman Bale only had six months in between “The Machinist” and the start of production on Christopher Nolan’s “Batman Begins” to bulk up for his role as Bruce Wayne/Batman. The actor ended up putting on 100 pounds. “I would do splits — every day focusing on a different muscle group,” Bale told Train Magazine. “I would do three sets of 10 to eight, depending on what I was working on.” “I stuffed myself after The Machinist. My first screen test for Batm