沃尔特·里德

Walter Reed

饰：Kent Fowler

洛伊丝·科利尔

Lois Collier

饰：Helen Hall

格雷戈里·盖伊

Gregory Gaye

饰：Mota

James Craven

饰：Dr. Bryant

哈里·劳特

Harry Lauter

饰：Henchman Drake

理查德·欧文

Richard Irving

饰：Henchman Ryan

Sandy Sanders

饰：Steve

Dale Van Sickel

饰：Watchman [Ch. 1]

汤姆·斯蒂尔

Tom Steele

饰：Taylor

George Sherwood

饰：Bryant's Gateman [Ch. 7]

Jimmy O'Gatty

饰：Grady

Dick Cogan

饰：Kirk, Workman in Bryant's lab [Ch. 7]

罗伊·巴克罗夫特

Roy Barcroft

饰：Mota [Ch. 1] (archive footage) (uncredited)

巴里布鲁克斯

Barry Brooks

饰：Policeman in Bryant's Lab [Ch. 8] (uncredited)

迪克·克罗基特

Dick Crockett

饰：Cave Thug #2 [Ch. 5] (uncredited)

约翰·达海姆

John Daheim

饰：Boyd, Shipping Clerk [Chs. 4-5] (uncredited)

Sol Gorss

饰：Cave Thug #1 [Ch. 5] (uncredited)

Paul Gustine

饰：Technician [Ch. 1] (uncredited)

Chuck Hamilton

Chuck Hamilton

饰：Truck Driver [Ch. 4] (uncredited)

凯里·洛夫廷

Carey Loftin

饰：Truck Loader-Thug [Chs. 7-8] (uncredited)

克雷顿·摩尔

Clayton Moore

饰：Lewis Ashe (Chs. 1-2, 10) (archive footage) (uncredited)

大卫·夏普

David Sharpe

饰：Technician [Ch. 1] (uncredited)

Guy Teague

饰：Plant Guard [Ch. 6] (uncredited)

肯·特雷尔

Ken Terrell

饰：Graves, Mechanic [Ch. 3] (uncredited)

Michael Carr

Michael Carr

饰：Trent, semi-disc pilot

John De Simone

John De Simone

饰：Curtyis, Torpedo Tech.-Thug [Ch. 8]

Bill Wilkus

Bill Wilkus

饰：Pilot [Chs. 1-2, 10] (archive footage) (uncredited)

Lester Dorr

饰：Crane [Ch. 7, 11]