I actually have a Liste of all the villains from Favorit to least favorite. I'll give my oben, nach oben 5:
The oben, nach oben spot goes to Yzma for being extremely fun, casual, subverting many villain cliches, and for doing her own dirty work alongside her underling. Just a hair below her is Ursula for being so devious, actually valuing her minions, and for just being so shiveringly sultry.
Weiter is Frollo for being SO dramatically self-righteous and chillingly realistic. Rourke wins Weiter for being just so cold and real it's amazing.
Lastly, I bring up Hades, for being wonderfully kooky yet dark, and for his great energy.