Don Newvine
Agent O'Connell
Earl Webster
Don Balderston
David Fisher
Doug Stanley
Parks Supervisor
Detective Alan Batalli
R&D #1
Detective Mike Muldoon
Bank Manager Grimes
Dr. Felton
Capt. Tim Taylor
Vince Weathers
Capt. Bill Daly
Isaac Breland
Isaac Breland (voice) (uncredited)
Surgeon
Agent Berkley (uncredited)
Russ
Warden Ross
Teddy Bungemack
Fred Peterson
Stan Sowinski