possible. zexy's weapon, like i'm just quoting what i said earlier, is probably going to be given in either in the new game or later in the KH series.
He COULd make a significant role later. he could really be alive. He could join Sora, like Axel did, or he could be part of a new order with Light figures. Then would be the time to reviel his true weapon.
The Zexy in me head says,
"I'm just a weaponless illusion.
Nobody will miss me.
But then again...
I'm the one that they forgot."
PS. Souleater is NOT Zexion's weapon. it's just a copy of riku's old key.
not much is totally know about Zexy.
Zexion - The Cloaked Schemer
His element is illusion while his weapon is uknown to any one except Nomura truely knows.
Why else do ya think there are multi Zexys in those PRETTY new screenshots from KH: Com: Re. Maybe we'll learn more about him since you can battle him in the game.
Fan fics precieve him as emo, in which we all love.
Fan Fiction. Net got's great fics for that stuff, like Thoughts of Zexion