Just about every Square Enix RPG boasts at least one ultra-strong mage. From the white mage archetype known for healing and curing ailments to the red and black mages known for dishing out damage, there are plenty of examples of Square Enix spell casters who wield serious power.
While it would normally be quite difficult to compare mages across various titles, Final Fantasy and its spin-offs all tend to pull from the same pool of spells, which actually makes it a relatively simple task. If a character has access to some of the most memorable spells in Final Fantasy, there's a good chance they're quite powerful, and the opposite logic applies. Of course, there are other magical feats, in cutscenes or otherwise, that may rocket a mage to the top of the list.
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Kefka is without a doubt one of the most powerful villains in Square Enix history, even rivaling Sephiroth. A failed Magitek experiment turned court jester, Kefka is often regarded as the very definition of insanity, and he also happens to wield an inordinate amount of magical ability. At the conclusion of Final Fantasy 6, Kefka manages to transform himself into the literal God of Magic, a feat that places him comfortably at, or at least near, the top of a list of the strongest mages in Square Enix games.
While Kefka's interesting lore goes a long way in explaining his distinction as one of the most powerful magic users, Kefka's in-game feats are equally impressive. In the final fight, Kefka rotates between using the three most powerful versions of Fire, Lightning, and Blizzard spells, but outside the final encounter, Kefka also employs an extremely powerful spell known as «Forsaken,» which is unblockable,
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