Oh, man, yeah, Sephiroth, man. I'm not talkin' idiotic lil' FF7 battles, i'm talkin' about Kingdom Hearts. I just wanna beat that sucka, though, cause i have the Japanese version, where you get the One Winged Angel keyblade for beating him. Okay, top three hardest bosses for me are: 1. Sephiroth-KH 2.Swatter-B,VB 3.Galda-RDMM, sucka!