Kato is a fictional character from The Green Hornet series. This character has also appeared with the Green Hornet in film, television, book and comic book versions. Kato was the Hornet's assistant and has been played by a number of actors. On radio, Kato was initially played by Raymond Hayashi, then Roland Parker who had the role for most of the run, and in the later years Mickey Tolan and Paul Carnegie. Keye Luke took the role in the movie serials, and in the television series he was portrayed by Bruce Lee. Jay Chou  played Kato in the 2011 Green Hornet film.