Well... to me, atleast, it seems like Sephy will be an in-story boss. But I guess we'll have to wait for the game to be released outside Japan until we can find out. Also, atleast it seems harder to dodge Sephy's attacks in KH2. I mean... I can even beat him without healing myself even once in KH1 for god's sake! Sephy in KH1 is sooooo overrated!

Also, I think it's sad that the ability "second chanse" still exists in KH2.