Car Salesman
Lt. Matt Carson
William Murrell
Narrator (voice) (uncredited)
Karl, aka Dr. Acula
Sheriff
Nat Burdell
Capt. Foley
Tanner
Maj. Naylor
Ross McLain
Mcquaid
Lt. Lacy
Sam Mantell (as Kenne Duncun)
Henchman Indigo Hubbard
Sheriff Barnes
Rance
Al Bartlett
Henchman Dick Cantwell
Michael's Henchman
Sgt. Gordon (as Kenneth Duncan)
Sheriff Winters
Tom Blaine
Cal Freeling
Morgan
Henchman Kirk
Steve Dallas
Joe Bardet
Frank Stevens
Nebraska
Bill Mayberry
Tim Reymond
Henchman Bender
Sergeant on Sidewalk (uncredited)
U.S. Customs Agent Lou Evers
Gambler (uncredited)
Rustler talking with Jackson
Dr. Chambers [Chs. 1-2, 8]
Henchman Brannigan
Henchman Steve
Sam Priestly (as Ken Duncan)
Geologist McBride
Henchman Hackett
Asa Morgan
Croupier
Henchman
Henchman Pete McAvoy
Henchman
Henchman Jackson
Henchman Felton
Frank Hanlon
Ben Brady
Henchman Joe
Henchman (uncredited)
Lance - Henchman
Charles Mitchell
Man in Bar (uncredited)
Henchman Johnny Slade
Trigger Chandler
Servant
Boarder
Brazos Kane
Gambler (uncredited)
Spade - Henchman
Murder Victim (Uncredited)
Sidney Brand
Whitey - Henchman
Dave Brewster
Al Herman
Arthur Wilkes - Secretary
Paul--Deresco Aide
Henchman Pete
Henchman Adams
Henchman Gentry [Chs. 7, 11]
Henchman Chuck
Henchman Ben Bannon
Henchman
Deputy Barrow
Construction Worker (uncredited)
Snyder
Henchman Turner
Henchman
Charlie (Uncredited)
Homesteader Clark
Sheriff Jeff
Fred
R. J. Cole (as Ken Duncan)
Tom Bancroft
Blackie
George Hooker
Hanley
Express Rider
Henchman Pete
Cowboy in Saloon
Henchman
Marshal Frank Hammond (as Kenneth Duncan)
Henchman Ed Rance (as Kenneth Duncan)
Captain Anders (as Kenneth Duncan)
FBI Agent Tom
Henderson
Marvin
Henchman Durgan (as Ken Duncan)
Deputy Walt
Jess Fowler
Saloon Henchman
Henchman Pete Chandler
Jay Lynch
Henchman
Henchman
Henchman Scotty (as Ken Duncan)
Ram Singh, Wentworth's Hindu Chauffeur
Marshal Bob Day (as Ken Duncan)
Sergeant on Sidewalk with Sgt. Collins (uncredited)
Henchman Bragg
J.W. Carlton
Michael Bellamy
Bob Horner
Sheriff Dan Kirk (as Kenneth Duncan)
Captain Clay
Dave Hendricks (as Ken Duncan)
Henchman Two-Gun
Henchman Brownie
Car-Rental Clerk
Fred Jones (as Kenneth Duncan)
Henchman Tom
Chet Adams
Bill Willis
Bart Wallace
Captain Jim Wallace
Ranch-Hand Larry
Henchman Johnson
Henchman
Speed Dennison (as Kenneth Duncan)
Lt. Lacy
The Martian Airfield Captain
Ram Singh
Henchman Crandall
Airdrome Captain
Garsatti
Henchman Leathers (as Kenneth Duncan)
Lorenzo
John Sommerset
Chick Williams
Blake Hardy (as Kenneth Duncan)
Office Worker (Uncredited)
Wedding Rehearsal Attendant (uncredited)
Curly Andrews
Clint Scollard
