Gotham Knights

Gotham Knight is a Warner Bros. game's Montreal action role game co-op set in a similar sort of world to those Batman-Arcan games. The four characters you can play are, I believe, back girl Robin, old original Robin, and big muscly Robin who died and was brought back to life. W Games Montreal worked on which one? They worked on Arkham Origins, didn't they? So was it Rocksteady who did the other ones? Or am I getting that wrong?