Chaoko is an infant neutral Chao of standard coloration: light blue with yellow hands and feet, pink wings, and large blue eyes. Like other neutral Chao, they also have a teardrop-shaped head with a yellow orb floating above it.
In Sonic Adventure 2 and its remake Sonic Adventure 2: Battle, Chaoko is a level one beginner opponent in Chao Karate. In gameplay, Chaoko walk around slowly on the floor while fighting in Chao Karate. Their recommended status is 10.