Major Jeff Cummings
Prof. R. E. Walgate
Barbara Griselle
Col. Butler
Capt. Al Chester
Mayor Hawkins
Const. Howard Gibbons
Dr. Bradley
Dr. Warren
Sgt. Kasper
Melville
Ben Adams
Atomic Engineer
Amelia Adams
Nurse
Sentry (uncredited)
Minister (uncredited)
Jacques Griselle (uncredited)
Villager (uncredited)
Villager (uncredited)
Sergeant in Office (uncredited)
Townsman (uncredited)
Technical Sergeant (uncredited)