as the title says tell me what you think its the toughest optional boss and i am counting Sephorith but i dont want to see every post saying it >_> for me it would have to be the Phantom from KHI he kicked me around a good 5 times before i final figured out how to beat him ( i had to look at a friken FAQ to figure out how to make people stop dying from Death)
But the fight was fun and his inept hatred of Xehanort was kind of cool. The battle was by far the hardest in the series 
