<Li> J.K. Simmons as James Gordon: The Commissioner of the Gotham City Police Department and close ally of Batman . </Li> <P> Joe Morton and Robin Wright reprise their roles as Dr. Silas Stone, a scientist at S.T.A.R. Labs and Victor Stone's father, and as General Antiope, Hippolyta's sister and Diana's aunt / mentor, from Batman v Superman: Dawn of Justice and Wonder Woman, respectively . Amber Heard, Billy Crudup, and Kiersey Clemons will portray Mera, Dr. Henry Allen, and Iris West, respectively . Julian Lewis Jones and Michael McElhatton have been cast in undisclosed roles . </P> <P> In February 2007, it was announced that Warner Bros. hired husband and wife duo Michele and Kieran Mulroney to write a script for a Justice League film . The news came around the same time that Joss Whedon's long - developed Wonder Woman film had been cancelled, as well as The Flash, written and directed by David S. Goyer . Reportedly titled Justice League: Mortal, Michele and Kiernan Mulroney submitted their script to Warner Bros. in June 2007, receiving positive feedback, which prompted the studio to immediately fast track production in the hopes of filming to begin before the 2007 - 2008 Writers Guild of America strike . Warner Bros. was less willing to proceed with development with a sequel to Superman Returns, having been disappointed with the box office return . Brandon Routh was not approached to reprise the role of Superman in Justice League: Mortal, nor was Christian Bale from Batman Begins . Warner Bros. intended for Justice League: Mortal to be the start of a new film franchise, and to branch out into separate sequels and spin - offs . Shortly after filming finished with The Dark Knight, Bale stated in an interview that "It'd be better if it doesn't tread on the toes of what our Batman series is doing," though he personally felt it would make more sense for Warner Bros. to release the film after The Dark Knight Rises . Jason Reitman was the original choice to direct Justice League, but he turned it down, as he considers himself an independent filmmaker and prefers to stay out of big budget superhero films . George Miller signed to direct in September 2007, with Barrie Osbourne producing on a projected $220 million budget . </P> <P> The following month roughly 40 actors and actresses were auditioning for the ensemble superhero roles, among them were Joseph Cross, Michael Angarano, Max Thieriot, Minka Kelly, Adrianne Palicki and Scott Porter . Miller intended to cast younger actors as he wanted them to "grow" into their roles over the course of several films . D.J. Cotrona was cast as Superman, along with Armie Hammer as Batman . Jessica Biel reportedly declined the Wonder Woman role after being in negotiations . The character was also linked to actresses Teresa Palmer and Shannyn Sossamon, along with Mary Elizabeth Winstead, who confirmed that she had auditioned . Ultimately Megan Gale was cast as Wonder Woman, while Palmer was cast as Talia al Ghul, whom Miller had in mind to act with a Russian accent . The script for Justice League: Mortal would have featured John Stewart as Green Lantern, a role originally offered to Columbus Short . Hip hop recording artist and rapper Common was cast, with Adam Brody as Barry Allen / Flash, and Jay Baruchel as the lead villain, Maxwell Lord . Longtime Miller collaborator Hugh Keays - Byrne had been cast in an unnamed role, rumored to be Martian Manhunter . Aquaman had yet to be cast . Marit Allen was hired as the original costume designer before her untimely death in November 2007, and the responsibilities were assumed by Weta Workshop . </P>

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