Board Thread:Speculation House/@comment-24076018-20131108010229/@comment-4830106-20131109230820

GamingWriter wrote: So as his wiki page suggests, maybe him, Ozpin, Glynda and an unknown 4th person were in a team. Not the first time I've seen that theory, and I think it has merit. Although maybe Glynda wasn't on that team, since she addresses him formally and not in the familiar.

Most theorize that the missing 4th person is Ruby's mom or Cinder--both, if they are the same person.