Final Fantasy week, day 2

1. Sephiroth (Final Fantasy VII)

That's a lot to swallow. And he pulls it off without a hitch. Sephiroth, unlike most villains in Final Fantasy, begins and ends the game as your main adversary. He's never dumped at the last second for some pinch hitting omni-boss or revealed to be under the spell of some higher being. He's also not a one trick pony like Kefka - Sephiroth may be vicious, but his back story and motives are much richer than the mischievous stylings of FFVI's jester.

And that's the bottom line. Hate him or not, Sephiroth hits all the major points of excellent villainy and still walks away as a potential victor, even when his final form is all but gone.