The official cast of Warner Brothers' live-action Justice League of America movie is expected to be unveiled next week, but new reports claim several actors have already been cast in the George Miller-directed project.

Previously reported contenders Adam Brody (The O.C.), Common (American Gangster), Teresa Palmer (Wolf Creek) and Scott Porter (Friday Night Lights) have won roles in the film, several sources report.

Adam Brody is said to be playing Wally West, a.k.a. The Flash, opposite Common as John Stewart, the Green Lantern.

Palmer is not going to play Wonder Woman but rather one of the film's villains, Talia Al Ghul.

AICN claims Scott Porter might be playing Superman, but IESB counters with "our sources tell us he was up for the role of The Flash and obviously Adam Brody won out, we've heard nothing about him being cast as Superman."