By the looks of it, Kingdom Hearts was Disney's chance to shine. Kingdom Hearts II seems to be overrun by Square Enix characters.
Auron, Yuna, Sora, Kairi, Riku, Ansem and the Unknowns. And from what rumours I've heard, Cloud, Leon, Yuffie, Aerith and Cid as well. The main cast seems to be over-run with SE characters. Mickey, Donald and Goofy seem to be the only Disney names not taking back seat.