Jimmy (Jack Wild) ventures to Living Island with his magical, talking flute, Freddy. Once there, he befriends many of the island's inhabitants, but the evil Witchiepoo (Billie Hayes) is determined to steal Freddy the flute away from the boy to impress the visiting Witches' Council and win the Witch of the Year Award.
Jack Wild
as Jimmy
Billie Hayes
as Witchiepoo
Martha Raye
as Boss Witch
Cass Elliot
as Witch Hazel (as Mama Cass)
Allan Melvin
as H. R. Pufnstuf / Henrich Rat / Living Island Boat / Orville Pelican / Polka-Dotted Horse / Stupid Bat / West Wind (voice) (as Al Melvin)
Walker Edmiston
as Dr. Blinky / Ludicrous Lion / Seymore Spider / Various (voice)
Don Messick
as Freddy the Flute / Googy Gopher / Orson Vulture (voice)
Roberto Gamonet
as H.R. Pufnstuf
Billy Barty
as Googy Gopher / Orville Pelican
Angelo Rossitto
as Seymore Spider / Clang
Jane Dulo
as Miss Flick
Sharon Baird
as Shirley Pufnstuf
