User blog comment:Jkphantom9/Notes from the RWBY portion of the ExtraLife Stream/@comment-11188061-20151110015241/@comment-226878-20151110032341

There's no way the game would introduce a "Grimm villain". Being a villain requires motive, which we are explicitly told Grimm don't have. If there is some kind of all controlling force behind the Grimm, that's a HUGE fucking reveal that would be saved for later on down the line, not some side game we're gonna be getting before the first polyarc is finished.