Xavier

Xavier, is a recurring character in The Powerpuff Girls, the leader of the Gangreen Gang.

Season 1
From his base at the dojo, Xavier gave his orders to Lucas Neuwirth and his crew, which began with simple missions at Millennium Park, but eventually led to a break-in at the McCracken County Museum in order to steal the Book of Bakamin. After the successful retrieval of the book, Xavier informed the team that he would be arriving to picking it up in person the next.

Christopher Mills, one of Lucas' gang who was secretly working for the police department, attempted to steal the book before Xavier could arrive, but was caught red-handed by Desmond Callahan. When Xavier arrived, dressed like a monk in green robes, Desmond already has Christopher tied to a chair. Xavier gave Desmond permission to do as he pleased with Christopher before killing him, which pleased him. He invited Lucas to join him back at the base and extended the same invitation to Desmond before leaving with the Book of Bakamin.