Professor Duselberg

Self (Archival Fotage)

Bob

Charles

Lionel

Smedley D. Butler (voice)

Hobart Waxman

Tom Soberin

Jo Wilf

Bob Fisher

William O. Douglas

Al Cross

Self

Jim O'Connor

Dr. Blake

Rabbi Belsky

David Nemerov

Peter Redmond

Peter Hargrove

Self / Narrator

Senator Bell

Doug Rosselli

Bud's Editor

Thaddeus Rains

Agent Sterling

Phillip

Rick Anderson

Stanley Goldkiss

Judge Henry

Chairman Martin Dies

Leon Friedman

Admiral Quinn

George Grierson

General Clark Tully

Self / King Edward

Professor Speras

Dr Mercer

Leeds

Black Harry

Gen. George C. Marshall

Harold

Dad

National Security Advisor James Cutter

Wilbur Bryant

Marvin Boyd

Keneally

Prosecuting Attorney (uncredited)

David

Leo Watts

John Franco

Tyson

Judge Wexler

Paul

Dr. Berrisford

Elmore Silk

Conrad Kroll

Robert Calder

Thomas Foran

Chief Harrigan

Bernstein

Jesse James

Eddie Cassidy

Billy 'Bowlegs' Baines

Prosecutor Joseph T. Antonelli

Charles Conlin

Isaac Pratt

Arthur Pennington

General Dan Shomron

John Blackwood

Det. Carl Oller

John Lazia

Marty Heller

George 'Machine Gun' Kelly

Lieutenant Kastner

J. Edgar Hoover

Hog Yancy

Gordon Rankey

Sheriff Jack Casey

Zebulon Yandro

Parker Adderson

Leduc, A Doctor

Wyatt Earp

Joe Morgan