Self (archive footage)

Narrator

Max the Computer (voice)

Col. Tubman

Gas Station Attendant

Doc Wheelan

Brod

J. Edgar Hoover

Detective O'Brien

Marshal Riese

Holtzman

Special Effects Man

Bartender

Patsy

Capt. O'Neal

Amos Burns

Frank Dunniger

Otis Duncan

Willard Edson

Gavin

Gregorio

Gen. Lewis Meyers

B.J Hankins

Parker

Inspector Joseph Medford

Self (archive footage)

Columbus Smith

Brian F. Stroud

Luke Starr

Sheriff

Col. Lenox

Joe Harbin

MP Major

Harrigan

Oakley

Man in hotel (uncredited)

Don Sancho

Warden

Dr. Stefan Bernardi

Re Eurito (King Eurystheus)

Henry Scott

Capt. 'Waco' Grimes, CO Co.G

Vinnie Harold

Augusto

Dr. Aarons

Nahum

Rollo Lamar

Charlie Lupo

John 'Ripley

Carl Buckley

Charles Leatherby

Sheriff John Frazier

Sgt. Matt Trainor

Remy Marko

Thomas Craden

Mark Chapman

Johnny Damico

Harry Brock

George Knowland

Johnny Phelan

Self

Willie Stark

Frank

C.L. Shawn

Mr. Botts

William Morgan

Captain Kinsella

Krupp

Ernie Hicks

Chips Jackson

Captain Flood

Louis Prentiss

Self

Brod - Factory Worker

Dude McNair

Henry Clay Jackson

Steve Crandall

Jug Martin

Aloysius 'Butch' Grogan

John Thorn

Chuck

Bob Holliday

Speedy Miller

Hubert A. Gilmore 'Gil' Smith

Swanee

Mace Townsley

Little Ned

Bob Dalton

Michael G. 'Sonny' McGann

Russel Sampson

Don Burns

Lieut. Larsen

Tex Ballister

Hank Miller

Eddie Krator

Archibald 'Doc' Finney

Randall

Biff Gordon

Hunk

Guard Outside Paradise Club (uncredited)