The second version of how it would be in Justice League of America movie.
Martian Manhunter - CGI/Jon Hamm as John Jones
Hawkgirl/Shiera Hall - Scarlett Johansson
Superman/Clark Kent - Brandon Routh
Wonder Woman/Diana of Themyscira - Olivia Wilde
Batman/Bruce Wayne - Christian Bale (he's perfect for Batman!)
Flash/Wally West - Chris Evans
Green Lantern/Hal Jordan - Ryan Reynolds