Zack Snyder has teased some of the details about the upcoming Superman sequel, which will see the superhero clash with Batman.
Henry Cavill is returning as Superman and will be confronted with Ben Affleck's Batman, and director Zack Snyder dropped some hints about what would happen while at a Yahoo fan event to celebrate the US Blu-Ray release of Man Of Steel, according to Empire.
Zack said of Superman and Batman appearing together: "The fun of the idea is to be able to play with that relationship. Whether they fight and become friends, or whether they're friends and they fight... Of course, some physical conflicts will be involved."
He also suggested Lex Luther would put in an appearance, saying: "Lex loves to call Superman an alien."
Zack didn't reveal anything else about the plot but it's been rumoured that Dick Grayson, aka Robin, could be played by Girls star Adam Driver.
As for the female lead, there has been speculation that Wonder Woman could crop up, although the role is currently listed as a potential love interest for Ben's Bruce Wayne, with Olga Kurylenko, Gal Gadot and Elodie Young said to be the front runners.
The Superman sequel is due to start production early next year and has been set for a July 17, 2015 release date.