One of the creators of the classic 1960s TV series Batman has passed away.

Lorenzo Semple Jr. is credited by IMDB as the developer of the campy 1966-68 TV series that starred Adam West as Batman. Semple also wrote 14 of the show’s 120 episodes, along with the 1966 big-screen movie. His other TV work including penning multiple episodes of Burke’s Law and The Green Hornet.

After Batman, Semple wrote the screenplays for a number of movies, including Flash Gordon, Papillon, Three Days of the Condor and the 1976 Jeff Bridges-Jessica Lange version of King Kong.

Semple died Friday in Los Angeles, one day after his 91st birthday.