Heroic Warriors - 9
Evil Warriors - 10
Evil Horde - 11
Great Rebellion - 8
Snake Men - 6
He-Ro, Son of He-Man - 1
Galactic Protectors - 2
Space Mutants - 3
Powers of Grayskull - 5
No Allegiance Good (this is for any characters that don't fall into a faction, i.e., Dekker, Granamyr, Procrustus, Melaktha, etc.) - 4
No Allegiance Evil (this is for any characters that don't fall into a faction, i.e, Count Marzo, Evil Seed, Lodar, Shokoti, etc.) - 7

This was kinda hard to decide on. I'm pretty sure the Evil Horde is my absolute favorite faction though. That was the absolute PEAK of MOTU.