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