as Cowboy (uncredited)
as Man in Elevator (uncredited)
as Stilwell's Assistant
as Sam Julian
as Donal, a searcher
as Dr. Frank Gordon
as San Francisco Dispatcher (uncredited)
as Barney (uncredited)
as Fireman (uncredited)
as Penny - Bartender (uncredited)
as Montague Underdunk
as City Clerk (uncredited)
as Salesman (uncredited)
as Senator
as Newsman (uncredited)
as Tourist at Bar
as Germ Experiment Victim (uncredited)
as Minor Role (uncredited)
as Mike
as Dirk, a Mutate
as Cowhand
as Mr. Davalos
