The big baddies in Final Fantasy have been known to lob planets, slice galaxies, and even give the fabric of reality itself a wedgie in their attempts to thwart the series' various heroes. Needless to say, these beings are throwing an immeasurable amount of power around. But put in an interdimensional ATB cage match, which entity from the Final Fantasy cannon would register as the most potent? Considering that the heroes are generally able to beat these villains in one-on-one combat, they might be considered the most powerful.