The Karate Kid
According to Josh Heald, Jon Hurwitz, and Hayden Schlossberg, only the characters from the original four films "The Karate Kid" (1984), "The Karate Kid Part II" (1986), "The Karate Kid Part III" (1989), "The Next Karate Kid" (1994) comprise the "Miyagi-verse" that shapes "Cobra Kai."