Ben Affleck is returning as Batman in the upcoming Flash movie from Warner Bros. This cameo role of Dark Knight will appear alongside Michael Keaton’s Batman from the 1989 Tim Burton film. The Flash director Andy Muscietti says Batman is a ‘substantial’ part of the story. “His Batman has a dichotomy that is very strong, which is his masculinity-because of the way he looks, and the imposing figure that he has, and his jawline – but he’s also very vulnerable,” he told Vanity Fair.