Koh, the Face Stealer

Koh, the face stealer is a spirit that appears first in Siege of the North (Part 2). If Koh sees a person express emotion, he can steal their face and add it to his collection. He has the body of a Centipede and a neck that is like a set of eyelids. Every time Koh blinks, he can change faces to another face in his collection. He has faces belonging to several animals, monsters, and people, including the face of a past avatar's lover. That avatar tried to kill Koh and since then he has kept a grudge against the avatars.