Matt Damon and Ben Affleck auditioned for Robin in Tim Burton's Batman

In alternate timeline, Ben Affleck would've been the first actor to play both Batman and Robin on the big screen. Either that, or Matt Damon would've hit the big time at a much younger age.

Affleck, who plays Batman in the DCEU, recently opened up about growing up as a child actor with Damon on Jimmy Kimmel Live! and he revealed that both of them auditioned to play Robin in Tim Burton's 1989 adaptation of Batman

"We weren't sure what [the movie] was because they told us that it was a secret project," Affleck said. "They gave us what was obviously kind of a dummy, generic scene about a kid who wanted to race BMX or something like that. We go down there and we're about to read and when we get into the room, they tell us, 'We didn't want anyone to know about this and you need to keep it secret, but this is actually an audition for, uh, Tim Burton is making a movie of Batman and this is for Robin.' So we both auditioned for Robin and we were both pretty sure we got the part."

However, Affleck said Burton and the producers decided against including Robin in the flick because "it was an ambiguous relationship." Of course, Chris O'Donnell eventually played Robin in Joel Schumacher's Batman Forever and Batman & Robin and it basically killed his career.

Meanwhile, Affleck isn't sure how much longer he'll play Batman. In fact, he said he's still "contemplating" if he'll be in Matt Reeves' upcoming standalone Batman flick. But he's definitely in Justice League, which hits theaters Nov. 17.