The following Hanna-Barbera voice actors also performed in Krofft productions: * Norman Alden played Frank Heflin on Electra Woman and Dyna Girl. * Billy Barty played many roles, including Sigmund on Sigmund and the Sea Monsters. * Ruth Buzzi played Fi on The Lost Saucer. * Teddy Eccles played Brad in the Dr. Shrinker segment of The Krofft Supershow. * Walker Edmiston performed supporting voices on H.R. Pufnstuf and The Bugaloos, and played Enik on Land of the Lost. * Wesley Eure played Will Marshall on Land of the Lost. * Joan Gerber performed the voice of Freddy the flute on H.R. Pufnstuf. * Patty Maloney played Honk on Far Out Space Nuts. * Sparky Marcus played Shelby, the nephew of Sheldon the genie, in the second season of Sigmund and the Sea Monsters