Wuya is one of the main antagonists in Xiaolin Showdown, the main antagonist in the first series and principal antagonist to the whole Xiaolin. Wuya is an evil Heylin witch who was once the most powerful and evil being in the world and who also once tried to conquer the world 1500 years prior to the show's beginning. She is constantly trying to collect the Shen Gong Wu (magical artifacts that, when put together, form a powerful demon that called Mala Mala Jong) in order to take over the world. Since she is a ghost for a great part of the series, and she needs a living person to collect these artifacts for her.