Leonard Freeman Creator, Executive Producer, Producer, Writer Jack Lord Det. Steve McGarrett Actor James MacArthur Det. Danny Williams Actor Kam Fong Det. Chin Ho Kelly Actor Gerald S. O'Loughlin Charlie Swanson Guest Star Gavin MacLeod Big Chicken Guest Star Bob Doyle Tommy Guest Star R. G. Armstrong Capt. Wade Guest Star Eddie Sherman Sherm Guest Star Philip Leacock Producer Leonard Katzman Producer Bill Finnegan Producer John D. F. Black Writer Seymour Robbie Director