yinyang (II S2)

Yin-Yang holds unique abilities, like:

Stout strength: Yin-Yang is strong enough to kick both OJ and Paintbrush off of a cliff, and to kick Silver high up in the air.
Mindful positioning: They are able to have one of the halves take full control of the body.
Large Appetite: Yang was able to eat a whole uncooked pizza in one bite in Cooking for the Grater Good, and Yin was able to eat Dough in one bite in "A Kick in the Right Direction".

Yin-Yang appears as a spherical form of the yin-yang symbol (symbol of taoism), split white and black by a wavy division, nearly in the Old Yin position. They have two arms and two legs, which both halves can control at their own will. Yin, the white half, is on the lower left-hand side, and Yang, the black half, is on the upper right-hand side. Sometimes, Yin is on the right-hand side, and Yang is on the left-hand side. Yin-Yang’s mouth is on Yin's side, with one eye shown black, whereas the other on Yang's side is shown white. As seen in "Try Not To Laugh Challenge," when Yang takes full control of the body, Yin's eye becomes white with a black outline. As for Yin taking full control of the body, Yang's eye becomes black with a white outline.

Yin, the white half, is good-hearted, kind, honorable, and rational, whose intent is to balance out Yang, the black half, who is massively chaotic, malicious, loud and impulsive. While Yin is happy to participate in challenges and actively tries to help out, Yang despises participation and typically enjoys the misfortune of other characters, and will lash out and attempt to harm others, including Yin.

This difference in character makes Yin-Yang participation and handiness quite limited, sparking many enemies with others. Because they are attached, Yang does not get away with bad doings, for Yin can easily stop him.