ABC Breaking News | Latest News Videos Ben Affleck is the latest in a long line of men with prominent chins to don the cape and cowl, so it's no surprise he sought advice on the role from some of his famous predecessors.
In an interview alongside his Batman v Superman opponent/costar Henry Cavill, Affleck told Good Morning America's Jesse Palmer that two legendary Batmen – George Clooney and Christian Bale – had offered their guidance.
"I talked to Clooney and he gave me some advice which is not repeatable," Affleck joked. "And I talked to Christian, who just told me to make sure I got a zipper in the suit, which was valuable, practice advice as it turned out."
Clooney starred as the caped crusader in the regrettable Batman & Robin (1997), which featured the unforgettable nippled bat suit. And Bale starred as Batman in the Christopher Nolan's acclaimed Dark Knight Trilogy: Batman Begins (2005), The Dark Knight (2008), and The Dark Knight Rises (2012).
Affleck also dished on the year long workout regimen he undertook to get into crime fighting shape, which he admits was spurred on by a little healthy competition with Cavill.
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"I saw the first movie that he was in [Man of Steel] and I was kind of like, 'Wow, well I don’t know if I'm going to be able to be quite in that good of shape,' " he joked.
But Affleck noted that Cavill's superhuman physique was necessary to play a God-like alien. "I figure I had a lower bar to reach, I'm just a man after all," Affleck quipped.
When all was said and done, the Gone Girl star says he packed on 20 pounds of muscle for the role, which, he says, "was really hard to do, certainly at my advanced age."
But as long as the movie is well received, Affleck says all the work was well worth the effort. "I really care about [the film] and I want it to do well. I feel like I got to work with some really talented people and I'm really proud of what we were able to do."
Batman v Superman hits theaters March 25.