Master Xandred is the leader of the Nighloks and the primary villain of both Power Rangers Samurai and Power Rangers Super Samurai. He is the primary adversary of the Samurai Rangers. He comes from the Netherworld and lives on a ship floating on the Sanzu River. It is revealed that he takes large doses of medicine for his frequent headaches (similar to Rita Repulsa's), often causing him to fall asleep. He becomes angry easily, especially if his henchman are insubordinate or speak out of turn. He also has an intense hatred for Deker, since Deker intervened in one of Master Xandred's plans (which also involved Jayden, the current Red Samurai Ranger).