MTV’s Josh Horowitz caught up with the LEGO Batman movie producers Chris Miller and Phil Lord, and Batman himself Will Arnett at an event last night. Miller has previously said that every era of Batman filmmaking will be acknowledged in LEGO Batman, but wouldn’t confirm if Michael Keaton’s, Christian Bale’s, or Adam West’s Batman will be in the movie.

“No spoilers,” Lord teased. “But I will say I think the movie is really exciting because it’s about ‘Can Batman be happy?'”

That’s an interesting plot for a Batman movie! The movie is currently in production, and Will Arnett teased some of the footage that he’s seen. “The first bit that I’ve seen was mind-boggling”, he said.

Check out the full interview in the video above to hear more about LEGO Batman, which is currently scheduled for a 2017 release.

SOURCE: MTV