Seven years ago WB and DC tried to get a Justice League movie into production. It went as far as casting the parts of Batman, Wonder Woman and the Flash. But as we can all tell, the film didn’t pan out.
So it’s no surprise that once Marvel kicked things heavily into gear for The Avengers that WB would have another try at bringing their superhero team on the big screen. In fact, WB anticipated the success of The Avengers and hired Will Beall to write the Justice League screenplay.