S the heartless
Just follow the link
here to see his weapon.
Scroll down to the Organizaion XIII battles. There you'll see Zexion's. It appears Zexion's weapon is a book...very appropiate.
There's also a bunch of info on Kingdom Hearts: Final Mix and Chain of Memories for the PS2.
And just to throw it in here's a
vid for the secret ending of Final Mix.Enjoy,
~S
Its noted that he used a lexicon that was capable of STEALING knowledge rather than divulging it. In RE:COM he used it well, in 358/2 days....not so fancy. I'm just guessing but in KH2 it wasn't revealed because the creators couldn't think of anything for the scheamer to use lol.
Edit:
I also noticed alot about the xemnas breaking tombs things. They aren't tombs, they were the doorways to each person's individual room. Notice how the deceased had red doormats and the living had blue. Only one was blue but it was still broken. Once a member of the organisation left or was destroyed, so was their domain. I assume it was a sign that they could never come back. No longer existed and so their living space need not exist either.