Martin Kove is an American actor and martial artist best known for The Karate Kid, in which he played John Kreese, the headteacher of the Cobra Kai karate school. He reprised the role in two sequels, The Karate Kid Part II and The Karate Kid Part III as well as the 2018 television sequel series Cobra Kai. He was first seen as ‘Nero the Hero’ in Death Race 2000, and afterward as Clem in White Line Fever. He appeared in the TV series Cagney and Lacey, portraying Police Detective Victor Isbecki, and afterward appeared in Rambo: First Blood Part II. He also starred in the short-lived science fiction series Hard Time on Planet Earth and made guest appearances on several television programs including Gunsmoke, Three for the Road, Kojak, Quincy, M. E., The Incredible Hulk, Hercules: The Legendary Journeys, The Rockford Files, The Streets of San Francisco, and Black Scorpion.