William Campbell

as Trelane

as Koloth

as Wilburn White

as Paul Marchand

as Richard Haloran

as Allen Sheridan

as Jeff Jimson

as Doctor Sutter

as Pvt. Ed Wallace

as Luke

as Brett Reno

as Concho

as Hobie Wheeler

as Cabot Young

as Walter Booth

as General Forest

as Talker

as Wolfe

as Jean Saval

as Sam Jenks

as Johnny Cool

as Grady

as Joe Dugan

as Brown

as Keeno

as Antonio Sordi

as Emery Kehoe

as Frank Korvac

as Pvt 'Ski" Wronski

as Police Detective

as Rico

as Capt. John Rustford

as Whit Whittier

as Tommy Dancer

as Ted, News Photographer

as Tony

as Cpl. Danny Dominick

as Joe Machin

as Peter

as Nick Ferretti

as Clinton Gunston

as Toni

as Dr. Jon Fielding

as Julie Davis

as Jim

as Will Gaines

as Danny Farber

as Cole Eldridge

as Chuck Logan

as Bill Wherry

as Officer Clyde Bannon

as Nick Cannon / Nicholas Cannonvich

as Ralph

as Self (archive footage)

as Virgil Stewart

as Pete Bailey

as Jerry Austin

as Police Detective