It looks like Nightwing is set to make his live-action feature film debut in Zack Snyder’s Batman vs. Superman, and Warner Bros. is eyeing Adam Driver (Girls) for the part. The report calls Driver the frontrunner for the role, which is described as being Batman/Bruce Wayne’s (Ben Affleck) estranged partner, Dick Grayson. Grayson took on the Nightwing moniker to go off on his own crime-fighting adventures after being taken under Batman’s wing as his side-kick, Robin, but this iteration finds the former dynamic duo apart for a number of years
In a similar bit of curious casting, Batman vs. Superman is currently looking for a female lead and is auditioning Olga Kurylenko (Oblivion), Gal Gadot (Fast & Furious 6), and Elodie Yung (G.I. Joe: Retaliation). The role may be as general as Bruce Wayne’s love interest or as specific as one Diana Prince/Wonder Woman; it’s also possible that the two will be one in the same.
why would batman and superman fight each other?
Diana Prince/Wonder Woman