Dr. Frank Poole
Earl
Danny Burke
Cliff Macy
Sir George
Allen 'Toots' Tuttle
Russian basketball player
Leroy Hastings
George Matthews in Model Shop (archive footage)
Jordan Evanhower
George Matthews
Capt. Kramer
Frank Clinger
Frank Lassiter
David Seville
Tony Ferris
Gang Member (uncredited)
Harley Moon
Rossiter
Ben
Bret Haskell
William
Dr. David Becker
Gary
Self
Eliot Travis
Walter Lucas
Major Douglas
Dave Cully
John Praiser
Sheriff Earl Baker
Fred Barker
Sam Mercer
Lt. Cmdr. Gary Mitchell
Sgt. Carey Dunston / DEA Agent Twill
Frank Connery
Ben Sillman
Kelsey
Claude
Grant
Jim Stark
Davey Carroll
Sgt. Meider
James Figg
Lt. William 'Bill' Rice
Clint Bethard
Young Policeman (uncredited)
John Hopper
Hopper
Dr. Owen Denny
Tom Carpenter
Sheriff
Owen Russell
Dr. Carl Webson
Stan Gallagher
Charley Belasco
Nicholas Varsi
Howard Lee
Mitch Mitchell
Sheriff Deloy Hays
Daniel C. Thacker / Eddie Blair
John DeLacey
Lorenz
Harris Talmadge