character - Hilly

character - Mr. Sweet (uncredited)

character - Bartender (uncredited)

character - Buck Langhorn (uncredited)

character - Gordo - Graile's Bodyguard (uncredited)

character - The Gill Man (on land) / Marineland Diver (uncredited)

character - Cadet Dotson (uncredited)

character - Board Member (uncredited)