Kaspa
Buster Crabbe
Ann Rogers
Frances Dee
John C. Knolls (uncredited)
Robert Adair
Bit Role (uncredited)
Thomas Amos
Mrs. Edith Knolls (uncredited)
Florence Britton
Reporter (uncredited)
Don Brodie
Clerk at Hunting License Bureau (uncredited)
Leonard Carey
Spinster in park (uncredited)
Nora Cecil
William R. Dunn
Harold Farley
Sam Farrell
Government Inspector (uncredited)
William J. Kelly
Neil Forbes
Sidney Toler
Cop (uncredited)
Fred Kelsey
Policeman (uncredited)
Edward LeSaint
Lion Attendant (uncredited)
Tom London
Customs Inspector (uncredited)
Lee Phelps
F.M. Pitts
Gus (uncredited)
Warner Richmond
Mabel Stark
Harry Strang
Phil Tead
George Turner
Sue
Nydia Westman
Joe Nolan
Robert Barrat
Corey
Irving Pichel
Ed Peters
Douglass Dumbrille
Gwana
Sam Baker
Kitty
Patricia Farley
Kaspa, aged 3
Ronnie Cosby
Director
H. Bruce Humberstone
Director of Photography
Ernest Haller
Assistant Director
Jules White
Original Music Composer
John Leipold
Novel
Charles Thurley Stoneham
Special Effects
Gordon Jennings
Associate Producer
E. Lloyd Sheldon
Adaptation
Max Marcin
Screenplay
Philip Wylie
Fred Niblo Jr.
Casting
Mel Ballerino
Sound
Harry D. Mills
Herman Hand
Stunts
Fred A. Datig
Rudolph G. Kopp