James Coburn

Narrator (voice)

Self (archive footage)

Self

Earl Chafee

Matt Carson

Hamilton Nash

Thunder Jack

Waternoose (voice)

Pete Jessup, Elmer Trace, Ross Marquette

Self (archive footage)

Dr. Narry

Harlan Hartley

Commodore Duvall

Mike Donan / Lou Donan

Peter Mayhew

George Kaplan

Colonel Briscoe

John Simpson Chisum

Arthur Troy

Cyrus Ramsey

Self (archive footage)

John Reston

Actor in Diana's Movie (uncredited)

Self

Self - Host

Luke Matthews

Charlie Doyle, Jess Newton

Clinton

Pat Garrett

Self

Dr. Peter Carey

Lt. Commander Paul "Bus" Cummings

Boyd Palmer

Sedgwick 'Manufacturer'

Kell

Britt

Harry Brind

Andrews, Union Sergeant

Claude Firman

Steve Barnes

Sam Chandler