One of the first installments in James Gunn's DCU — and the first official appearance of Batman in the franchise — is now in jeopardy thanks to an upcoming film. Though Batman has very notably appeared in Matt Reeves' The Batman, the character has only been in one scene of the DCU so far. The Batman technically isn't part of the main franchise, and as such, Bruce Wayne still has yet to be seen in the DCU in live-action.