Everyone has encountered that one antagonist who was especially awesome or did something that made you go

My pick is the long haired "hero" with the impossibly long katana, Sephiroth!

reason 1: look at my avatar.
2:He does the unthinkable and kills the pretty hostage.
3: Ive lost count of how many times he skewered Cloud
4: Hes got (count them) one wing. Yeah. You try flying straight with one wing.
5: His English voice actor also does the voiceover for the Prius commercial. I smell irony!