Kefka is probably the only villain in FF to ever achieve their goals (he became a god) and the party couldn't stop him. (Though they did defeat him in the end from destroying the world.) Quite possibly the #1 villain of FF.

If Kefka isn't the best then it's most likely Kuja. Kuja had also accomplished his goal of killing Garland and achieving Trance. He had many qualities like Kefka that make him a great villain as well.

I expected Sephy to have a lot of popularity. He is a great villain, but the fact that he looks cool and totally beats Kefka the clown and Kuja the cross-dresser by looks is probably what many people like him for, not his villainy.

But I seriously never thought Ultimecia would actually do this well. After all, you never even got to see her directly until the end of the game.

Honestly, me and Boco both think Ultimecia just plain sucks in almost every way. :rolleyes2

But hey, that's just us.