Gary Lockwood

as Gary Mitchell

as Gary

as Self

as William

as Major Douglas

as Capt. Kramer

as John Praiser

as Grant

as Sam Mercer

as Tom Carpenter

as Sheriff Deloy Hays

as Harris Talmadge

as Stan Gallagher

as Ben

as Dr. David Becker

as Dr. Owen Denny

as Sheriff

as DEA Agent Twill

as Sgt. Carey Dunston

as Daniel C. Thacker / Eddie Blair

as Sheriff Earl Baker

as Dave Cully

as Harley Moon

as Jordan Evanhower

as Leroy Hastings

as John DeLacey

as Bret Haskell

as Frank Lassiter

as Claude

as Walter Lucas

as Fred Barker

as Frank Clinger

as John Hopper

as Hopper

as Howard Lee

as Mitch Mitchell

as Charley Belasco

as Owen Russell

as Eliot Travis

as David Seville

as James Figg

as Rossiter

as Ernie

as Dr. Carl Webson

as Lorenz

as George Matthews

as Kelsey

as Dr. Frank Poole

as Tony Ferris

as Earl

as Nicholas Varsi

as Lt. Cmdr. Gary Mitchell

as Self

as Ben Sillman

as Clint Bethard

as Frank Connery

as Lt. William 'Bill' Rice

as Danny Burke

as Sgt. Meider

as Sir George

as Allen 'Toots' Tuttle

as Bo

as Cliff Macy

as Russian basketball player

as Russian Basketball Player (uncredited)

as Gang Member (uncredited)

as Davey Carroll

as Young Policeman (uncredited)

as Jim Stark