I think it would be good, since it was a good movie. It woulnd't be complicated for the boss though, it could just be a Heartless, like the Reaper from the Pirate's of the Carribean World.
I'm trying to figure out when 358/2 Days will come out and with the Japanese release date being Summer 2008. I may be able to figure it out by knowing how long the Japanese release and the American release dates are apart.