Chozen Toguchi

Chozen Toguchi (戸口長善) is the main antagonist of The Karate Kid Part II and later a supporting protagonist in Cobra Kai. He was the top student of Sato's Dojo and eventually becomes the sensei of Miyagi-Do Karate in Okinawa. After reconciling with Daniel LaRusso, Chozen becomes his friend and ally in Daniel's ongoing fight with the Cobra Kai Dojo.