Tod Andrews
— Dr. William Arnold
Tina Carver
— Dr. Terry Mason
Linda Watkins
— Mrs. Mae Kilgore
John McNamara
— Professor Clark
Gregg Palmer
— Kimo
Baynes Barron
— Chief Maranka
Robert Swan
— Tano
Suzanne Ridgway
— Korey
Mark Sheeler
— Eddie
Lee Rhodes
— Norgu
Grace Mathews
— Orchid
Tani Marsh
— Naomi
Chester Hayes
— Maku / The Tabanga
Lenmana Guerin
— Dori
Al Kikume
— Native (uncredited)
Max Reid
— Native (uncredited)