Hurwitz clarified that the Karate Kid animated television show is not canon, but an easter egg from it appears in Season 3 of Cobra Kai.
Additionally, Karate Kid actors Rob Garrison (Tommy), Ron Thomas (Bobby Brown), Tony O'Dell (Jimmy), and William Zabka (Johnny Lawrence) were in the movie.
Karate Kid actors Randee Heller and Martin Kove reprised their roles as Lucille LaRusso and John Kreese in the film.
The following characters from The Karate Kid franchise return for the series: Daniel LaRusso, Johnny Lawrence, Lucille LaRusso, John Kreese, Bobby Brown, Tommy, Jimmy, Ali Mills, Mrs. Mills, Darryl Vidal, Kumiko Tanaka, Chozen Toguchi, Yuna, Terry Silver, Mike Barnes, Jessica Andrews, and Dennis de Guzman.
Actors from The Karate Kid, Rob Garrison (Tommy), Ron Thomas (Bobby Brown), Tony O'Dell (Jimmy), and Randee Heller (Lucille LaRusso) made guest appearances during this season.
The animated series had different voice actors for the following characters: Joey Dedio as Daniel LaRusso, Robert Ito as Mr. Miyagi, and Janice Kawaye as Taki Tamurai.