While i was playing 358/2 days, i found it a little odd that xion became covered in ice when she died. This is very similar to the way that Ven "dies" in the kh2fm+ bbs trailer. Does she die like this just out of coincidence, or is it for a reason?
My second question is the type or heartless that sora turns into after he releases kairi's heart + his own. He becomes a shadow heartless, but shadow heartless are made of pure darkness, not the darkness from people's hearts. If this is the case, then where did sora's heart go in the meantime?
well, heres my theory on Axel. first of all, riku does have a heartless, and he has a nobody. as you remember, when riku fused with xehanort, that became his heartless. after you fight him, and before you play as a heartless, riku comes out of xehanort and tells them to run away. axel IS rikus/part of xehanorts nobody. and i know ur saying that xemnas is his nobody, and he is. but xehanorts darkness changed the outcome of rikus nobody, who is axel. this would explain his rebellious nature, why he has a odd weapon instead of the keyblade, and why he is friends with roxas and is sometimes willing to help others. but this is just my theory.