So spoilers if you're not up to date to at least 3D but so far the 13 darknesses that Master Xehanort has said will make up his team are: Himself (Master Xehanort) Young Xehanort Xemnas Ansem, Sekeer of Darkness Isa Braig From that we have six which leaves seven totally up in the air although there are a few hints towards both Vanitas and Terra being used as vessels for Xehanort, adding 2 more. Those asides, however, I also feel as though PAST Riku could be used, if only during that brief period that Xehanort's heartless had possessed his body, although this is a bit of a long shot. Finally, he has not been brought up before, but I am almost certain that Xehanort will bring back another form of himself from his original body, which would most likely be himself from when he was in his absolute prime as a keyblade master. In fact, I hope this to be the strongest of the Xehanorts, being Master Xehanort at his full potential. Otherwise, there's possibly the other organization XIII members (which I doubt), Maleficent (which I really doubt), or new characters. Possibly even characters from X, although I don't know enough about the game to say anything about that. What do you guys think?