(1) Koopa Troop (Mario)
(9) Death Eaters (Harry Potter)
(13) Galactic Empire (Star Wars)
(21) Black Knights (Code Geass)
(2) Justice League (DC Comics)
(10) Stonecutters (The Simpsons)
(3) Order of the White Lotus (Avatar: The Last Airbender)
(27) Gryffindor House (Harry Potter)
SS and DE were meh, really.
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Aww, I lost to SuperNiceDog, Winner of the Rivalry Rumble Guru Contest