"Batman v Superman: Dawn of Justice" already features a number of heavy-hitting DC heroes and villains. In addition to uniting DC's Trinity of heroes (Batman, Superman and Wonder Woman), the film will also feature villains like Lex Luthor and Doomsday and cameos from Flash, Cyborg and Aquaman. But, as director Zack Snyder recently told Collider, the film almost had two more big name characters in it.

"The Joker and The Riddler both came close to being in this movie," said Snyder. "We talked about the possibility of putting them in. [Screenwriter] Chris Terrio and I talked about it a lot and felt that their mythological presence is felt in the movie and that's cool, but I didn't want to get my eye too far off the ball because I needed to spend the time, frankly, with Batman and Superman to understand the conflict."

Instead, the Joker will appear in "Suicide Squad," which arrives in theaters this August. That film will also feature Batman to some extent, most likely in flashbacks. The Riddler, however, is not yet scheduled to appear in a feature film and hasn't since 1995's "Batman Forever." Cory Michael Smith is playing a younger version of the character on television, however, on Fox's "Gotham."

Directed by Zack Snyder and starring Henry Cavill, Ben Affleck, Gal Gadot, Jesse Eisenberg, Laurence Fishburne, Amy Adams and others, "Batman v Superman: Dawn of Justice" hits screens on March 25.