Nariyoshi Miyagi, better known as Mr. Miyagi, is a fictional character and the overarching protagonist of Robert Mark Kamen's The Karate Kid franchise, appearing in The Karate Kid (1984), The Karate Kid Part II (1986), The Karate Kid Part III (1989), and The Next Karate Kid (1994). He was portrayed by Japanese-American actor Pat Morita. A wise, Okinawan-born karate master, he mentors Daniel LaRusso in the first three films (1984–1989) and Julie Pierce in the fourth film (1994).
https://en.wikipedia.org/wiki/Mr._Miyagi