Human
Ghost
Zombie
Unicorn
Pegasus
Dwarfs
Leprechauns
Elves
Vulcan
Bajorians
Romulans
Borg
Mermaids  girl only
Merman  boys only
Dolls
Animals
Shape-shifter
Innatimate object like in the object show

Fairy
Vampire
Werewolf
Centaur
Xerxes
Hippogriff
Angel
Fallen angel
Demon
Wirewolf  the robot form of a werewolf
Robots
Tangean
Elemental human
Clowns
Hologram
Android
Klingon
Martian
Sime beast

Any others I forgot
The Borg are the villains

Resistance is futile