Huge Materia is one of the main objectives late in the game. They are materia that possess a great amount of power and are pretty hard to obtain. One of the Huge Materia is Bahamut ZERO, but that's beside the point ^^.

There are three types of Huge Materia remaining, right? So....all you need to do is master every single type of materia that you have and then you can get the Huge Materia! Hehe, that's easier said than done.

Master Magic	Master Summon (good luck)	Master Command