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