Alias No information Origin No information Occupation No information Powers/Skills No information Hobby No information Goals No information Type of Villain No information Yuck is an Evil Level 5 Woo Foo Warrior who originally was an entity formed from Yin's obsession with control and Yang's aggression. Yuck wants nothing more than to become the most powerful Woo Foo Knight ever. And to do that, he needs to eliminate Yin & Yang plus Master Yo. In the episode "Upstanding Yuck", he became good, but Yin and Yang didn't believe him. In the end, Yuck turned evil again after Yin and Yang attacked him many times. Despite being half female, Yuck is often considered a "he" and lacks eyelashes, much like Yin and Yang's combined Aura. It was listed that Yuck is a bedwetter.