Monkey

Catfish, Saint and the Shape-Changer (1x14)

:

The pilgrims enter a volcanic land that is plagued by earthquakes caused by the frequent quarrelling of two local demons; a catfish demon and a faceless shape-changer demon, who can take on the shape of anyone. The holy priest San-Chung tells Monkey, Pigsy, Sandy and Tripitaka that one of them is the shape-changer. Unable to cope with this revelation, they go their separate ways.