Originally posted by MooCowofJustice
I'm sure most will not actually prove me wrong. It all fits, Terhanort even uses the same Guardian Heartless that Ansem the Seeker of Darkness used.
SOME SPOILERS
0:37 to 0:45 says that there were two people that kept their free will after becoming a heartless. Sora is one. So it's not hard to guess who the other is.
2. In Hallow Bastion in the 2nd game, Goofy surmises that the boss they fight at the end of the 1st game was a heartless. Mickey agrees.
Again, he is referred to as a hearltess. Master Yen Sid, the guy who says that heartless can't think or plan, doesn't correct him.
4. If they were one and the same, where the hell did Xemnas come from and why doesn't he look like Old Xehanort? Why did he call Aqua's armor friend?
5. Assuming he was really Terhanort, why did he bother taking over Riku's body? He wouldn't need it. Hell, why bother with the DTD or anything like that when we've seen that Xehanort's main goal is to see what happened after the Keyblade War? He'd have been trying to recreate that instead of bothering with everything else, and the first game would have gone far differently.
6. Why didn't he use his keyblade at all in the first game?