William Zabka
Ralph George Macchio Jr. ( MAH-chee-oh, ; born November 4, 1961) is an American actor. He is best known for playing Daniel LaRusso in three Karate Kid films (the 1984 film The Karate Kid and its sequels, The Karate Kid Part II in 1986, and The Karate Kid Part III in 1989), as well as in Cobra Kai, a sequel television series on Netflix. Wikipedia