Character Name : Richard "Reef" Holloway

Original Name : Arthur Franz

Gender : Male

Character Name : Dan Wendover

Original Name : Dick Foran

Gender : Male

Character Name : Carl Neilson Jr.

Original Name : Brett Halsey

Gender : Male

Character Name : Ian Hunt

Original Name : Tom Conway

Gender : Male

Character Name : David Milburn

Original Name : Paul Dubov

Gender : Male

Character Name : "Grif" Griffin

Original Name : Bob Steele

Gender : Male

Character Name : Clifford Kent

Original Name : Victor Varconi

Gender : Male

Character Name : Julie

Original Name : Joi Lansing

Gender : Female

Character Name : Admiral Terhune

Original Name : Selmer Jackson

Gender : Male

Character Name : Justin Murdock

Original Name : Jack Mulhall

Gender : Male

Character Name : Helen Milburn

Original Name : Jean Moorhead

Gender : Female

Character Name : Frogman Carney

Original Name : Richard Tyler

Gender : Male

Character Name : Frogman Powell

Original Name : Kenneth Becker

Gender : Male

Character Name : Chester Tuttle

Original Name : Sid Melton

Gender : Male

Character Name : Watkins

Original Name : Frank Watkins

Gender : Male

Character Name : Narrator

Original Name : Pat Michaels

Gender : Male

Character Name : Saucer Voice (voice)

Original Name : John Hilliard

Gender : Male

Character Name : Passerby (uncredited)

Original Name : Edmund Cobb

Gender : Male

Character Name : Passerby (uncredited)

Original Name : Frank Lackteen

Gender : Male