Leo Gorcey
'Slip' Mahoney
Huntz Hall
'Sach' Jones
Patrick O'Moore
Alfie Grimshaw
Rudolph Anders
Dr. Goebbel
Bernard Gorcey
Louie Dumbrowsky
David Gorcey
Chuck
Benny Bartlett
Butch
Harry Cording
Henchman Shanks
Eric Snowden
Trader Holmes
Woody Strode
Malaka, head bearer
Laurette Luez
Anaka
Joel Fluellen
Rangori, witch doctor
Murray Alper
Max Lomax
Pat Flaherty
Police Officer Flaherty
Emory Parnell
Police Captain
John Harmon
Police Scientist
Roy Glenn
Chief Mutawa
Emil Sitka
Helpful Riverboat Crewman
Clint Walker
Tarzan