In addition to being the second entry in the DC Extended Universe, Batman v Superman: Dawn of Justice was also the first live-action movie to feature the Dark Knight and the Man of Steel appearing together. Of course, for a role like Superman, actor Henry Cavill—who portrayed the character in the film, as well as Man of Steel and Justice League—had to get into shape for it. However, according to Cavill's costar Ben Affleck, the actor may owe his heroic build to him.

While speaking to Men's Health, Affleck discussed working out with Cavill for the film, while also throwing in some humor. “I wouldn’t say we ‘worked out’ so much as I acted as Henry’s trainer,” Affleck said. “I really had to help him increase muscle mass—before my coaching, he looked like Gumby. In all honesty, we did work out together. And I hated it.”

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Released on March 25, 2016, Batman v Superman: Dawn of Justice starred Affleck and Cavill in the respective titular roles, which they would reprise for Justice League the following year. The film managed to rake in $873.6 million at the box office, though it was still deemed a failure due to not reaching an anticipated $1 billion total.

However, after Justice League's box office failure, Affleck will no longer portray the Caped Crusader, as Robert Pattinson will take up the mantle in director Matt Reeves' The Batman. Cavill, on the other hand, recently stated he has "not given up the role" of Superman.

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The next installment of the DCEU is Birds of Prey (And the Fantabulous Emancipation of One Harley Quinn). Directed by Cathy Yan from a script by Christina Hodson, the film stars Margot Robbie, Jurnee Smollett-Bell, Mary Elizabeth Winstead, Rosie Perez, Ewan McGregor, Steven Williams, Derek Wilson, Dana Lee, Francois Chau, Charlene Amoia, Chris Messina and Matthew Willig. The movie is scheduled for release on Feb. 7, 2020.