George Dickman
Frank
Si Addams (as Steve Dunne)
Stanley Kael (uncredited)
Tom Holland
Bobby Herman Sr.
Hamilton Gregory
Bob Sanders
Tom Crandall
Maj. Harry Bratton
Lt. Tom Mayfield
Tom Wilson
Chuck Lee
Ralph Winton
Thomas Weyman (as Stephan Dunne)
Jimmy Garland
Steve Carter
Fred Gibson
Owen Talbot
Prof. Stewart
Ray Shapley
Roy Bivins
Jed Barlow
Dr. Stevens (as Michael Dunne)
Professor Edward 'Ed' Bland (as Michael Dunne)
Frederick Manly Gerard (as Michael Dunne)
Uncle Willis Reynolds
