Wuya

Wuya (voiced by Susan Silo) is an evil Heylin witch and the most powerful being in the universe. She is the main antagonist of Xiaolin Showdown, and one of the major antagonists in the sequel Xiaolin Chronicles. She conquered the world 1,500 years ago, but is defeated in the first Xiaolin Showdown by the legendary Grand Master Dashi and trapped in a wooden puzzle box. However, many years later she is released by Jack Spicer.