I guess all bosses are annoying while u fight em, but when uve done, its great feling to know u beat em! But I had the most trubble wit both Ursulas and Oogie Boogie (when I had got up to Hollow Bastion I lost my game)!

Parastie cage (inside Monstro) i cudnt beat (when ur not with Riku)! i went 2 ollympus colleseum to gain some lvls, then i went to atlantica, then halloween town, and after finally beating them i remembered i still hadnt beat the parasite cage, but it was a fluke that time!