Brian Donlevy

as Archival Footage

as Self (archive footage)

as Self (archive footage)

as Professor Bernard Quatermass (archive footage)

as Self (archive footage)

as (in "The Glass Key") (archive footage)

as Grant Willard

as Mayor Joe Smith

as Detective Lee

as Dragon #3

as Marshal Willett

as Gen. Terry Arnold

as Ace Ross

as George Wellington

as B.D. 'Big Deal' MacPherson

as Henri Delambre

as Kurt Devlynne in 'A Southern Yankee' (arch. foot.) (uncredited)

as Col. Sherman Harrington

as Tom 'T.P.' Paramutual

as Steve Marshall

as Gen. Sloan

as John Ridges

as George Manton

as Jed Reston

as Doc Bender, Trailhand

as Bronc Grierson

as Constable Dale

as General Roger Brandon

as Prof. Bernard Quatermass

as Fred Childress

as Ed Bates

as Prof. Bernard Quatermass

as Joe McClure

as Sam Marvin

as Charles Quantrill

as Bide Marriner

as Sen. William J. 'Bill' Stephens

as Capt. Dempster

as Cmdr. McFarland

as Quantrill

as Dan Carmody

as Walter Williams

as Daniel J. McGinty

as Self

as Nick Palmer

as John J. Malone

as Walter Williams

as Brigadier General Clifton I. Garnet

as Jim

as Kurt Devlynn

as Jim Caighn

as Adam 'Duke' Byron

as Assistant D.A. Louis D'Angelo

as Joe McBride

as Capt. Vladimir Gregorovitch

as Maj. Gen. Leslie R. Groves

as Richard Henry Dana

as George Camrose

as Tony Minnetti

as Trampas

as Brian Donlevy

as Governor McGinty

as Stefan Dubechek aka Steve Dangos

as (archive footage)

as Narrator (English version)

as Dr. Franticek Svoboda

as Lieut. Cmdr. Martin Roberts

as Daniel Shane

as Paul Madvig

as Maj. Geoffrey Caton

as Harry Melton

as Vince Barrows

as General Andrew Jackson

as Memphis

as Steely Edwards

as Bob

as Movie Actor (uncredited)

as Jim Sherwood

as Capt. Mercer

as Angus Duncan

as Grat Dalton

as Daniel 'Dan' McGinty

as Kent

as Ralph Callendar

as Agent Norman Craig / Red Murray

as Sergeant Markoff

as Sid Campeau

as Barshee

as Steve Mitchell

as Yankee Gordon

as Chesty Webb

as Gil Warren

as Bob Kane

as Batiste Duryea

as Charles 'Chick' Gardner

as Ace Martin

as Frank Evers

as Steve Reardon

as Duffy Giles

as Packy Campbell

as James Evarts

as Vance

as Broken Nose Dawson / Spencer Dutro III

as Spike

as Knuckles Jacoby

as Charlie the Chauffeur

as Drunk (uncredited)

as Harry O'Day

as Unknown

as Kelly - Reporter (uncredited)

as Richard Courtney

as Ralph

as unknown

as Jim Porter

as Minor Role (Uncredited)