A moderately high level D&D character, DEFINITELY if they're a wizard, psion, cleric or druid that's built appropriately.

Cidolfas Orlandu.

Fei Fong Wong. By the end of the game, Fei Fong Wong WITHOUT going Id. Obviously both cases are without him being in his gear, if he has the gear Sephiroth dies even faster.

So obviously we include Grahf in this as well.

Albedo, again without needing his ES.

I'd say Rubedo and Nigredo have a good shot at him too.

chaos, definitely.

Kurosaki Ichigo.

Hell, any of the captain-level shinigami from Bleach.

Which means the Vizard and Arrancar go without saying. But we'll mention them anyway.

Kefka.

There are a bunch of others, but I've homework. I'll add more to the list later.

Oh, and this belongs in General Gaming.