There's something I'm a little confused about. I've been thinking about it a lot lately. If Riku changed his form to look like Ansem, wouldn't he have had to give up his heart? Therefore, shouldn't he have a nobody and a heartless? Sora became a heartless for a while, and Roxas was born. So if Riku gave up his heart, like Sora did, even if it was for a short time, shouldn't Riku have a nobody too? I'm sorry if there has already been a post like this, or if I'm just being stupid in thinking all this..