James Gunn and Zack Snyder both made separate Superman movies, but the filmmakers previously collaborated on a horror remake more than 20 years ago.

Zack Snyder’s Man of Steel deserves a lot of credit. The Christopher Reeve Superman movies had become such cultural icons for the character that the one time prior to Man of Steel that anybody tried to make a new Superman movie, they just tried to make a Christopher Reeve movie with different actors.

Zack Snyder gives James Gunn some unsolicited advice about his 'Superman' movie as the two cameo on 'Rick and Morty': 'He's the Man of Steel, not the Man of Conversation.'