James Gunn says his biggest challenge with the DC Universe right now is figuring out how to get Batman into it.

The writer/director of this summer's "Superman" and the co-head of DC Studios offers a peek behind the curtain.

Batman’s my biggest issue in all of DC right now, personally,” Gunn told Rolling Stone. “And it’s not—I’m not writing Batman, but I am working with the writer of Batman and trying to get it right, because he’s incredibly important to DC,