During his long career in Hollywood, Kerns performed stunts in a large number of feature films and a few television series. He is probably best known as the stunt double for Adam West in the 1966-68 Batman television series, alongside his "Day of the Dove" co-performer Victor Paul, who performed stunts for Burt Ward (Robin). They also appeared together in the 1966 movie version of Batman, which also featured Lee Meriwether, Frank Gorshin, Gil Perkins, Dick Crockett, George Sawaya, Eddie Hice and Charles Picerni.