2x11 - Xiaolin Showdown

Guan, one of the greatest warriors of all time, shows up and meets the Xiaolin Warriors for the first time. Guan tricks Dojo to accompany him to a palace where Chase Young, one of the most evil villains of all time, resides. However, Dojo doesn't know this. There, Guan trades Dojo to Chase in order to get his Spear of Guan back. Without the Spear, Guan is practically nothing. Dojo is horrified when he learns what Chase plans to do with him.