character - Mr. Davalos

character - Tourist at Bar

character - Dr. Frank Gordon

character - Mike

character - Cowhand

character - San Francisco Dispatcher (uncredited)

character - Senator

character - Dirk, a Mutate

character - Man in Elevator (uncredited)

character - Salesman (uncredited)

character - Germ Experiment Victim (uncredited)

character - Newsman (uncredited)

character - Donal, a searcher

character - Barney (uncredited)

character - City Clerk (uncredited)

character - Fireman (uncredited)

character - Minor Role (uncredited)

character - Cowboy (uncredited)

character - Sam Julian

character - Penny - Bartender (uncredited)

character - Stilwell's Assistant

character - Montague Underdunk

character - Raymond Chandler