Ben Affleck has revealed new details about his version of Bruce Wayne in the upcoming Batman v Superman: Dawn of Justice movie.

Speaking to Entertainment Weekly, Affleck discussed his older and more world-weary take on the iconic character in which he is struggling to come to terms with the death of Robin.

“[Batman is] bitterly disappointed … that he’s lost this guy who fought by his side,” said Affleck. “That character’s death must have been devastating to him, and he’s suffered. We get the sense that he’s suffered a lot of devastating losses before this movie even starts.”

The death of Robin mirrors the events of Frank Miller’s 1986 graphic novel The Dark Knight Returns, which we already know was a key influence on director Zack Snyder. In that comic, Batman is mourning the loss of Jason Todd, who was killed by The Joker before taking a female Robin, Carrie Kelley, under his wing.

Affleck also told Entertainment Weekly that the new Batman is inspired by Wonder Woman, who will make her long-awaited big-screen debut in Dawn of Justice, played by Gal Gadot.

“It inspires in him the idea that, well, if there’s one of these kinds of people out there, then maybe there are more,” Affleck said. “If there are more, then maybe that’s hopeful and also terrifying to him, because then they could make humans even more powerless – or they could serve on our side. You’ve got to remember that Batman is the world’s greatest detective, and if he suspects that there may be more, and if he suspects in particular that Diana may be somebody special, he gets inspired.”

Batman v Superman: Dawn of Justice will open on March 25.