Today news broke from Deadline that Gal Gadot has indeed been cast as Wonder Woman in Batman vs Superman. Now over at Variety's article they also mention that 300 & Zero Dark Thirty star Callan Mulvey is being eyed as the lead villain in Batman vs Superman:
Warners will also look to now cast the villain with “Zero Dark Thirty” and “300: Rise of the Empire” star Callan Mulvey someone Warner Bros. is eyeing to play the role.With it most likely being for Lex Luthor what do you think of this casting decision?!
:: UPDATE :: -
According to Think Mcfly Think Mulvey was at one point considered for Lex Luthor but is now being looked at for none other then Metallo! So yes it seems we are getting both Metallo and Ultron within 3 months of each other....
Batman vs Superman hits July 2015