Well, to put it out, only Vexen appeared on both sides of the story in :CoM.
Anywho, wow. Zexion's weapon caught me off-guard there, at first. I was all like, "A BOOK?!! OMGWTFBBQ!!!!!11"
Hmm. It seems like he may have some similar abilities to Luxord, as I saw a shot of Donald trapped in a...