理查德·艾尔

Richard Eyer

饰：Timmie Merrinoe

菲利普·雅培

Philip Abbott

饰：Dr. Tom Merrinoe

戴安·布鲁斯特

Diane Brewster

饰：Mary Merrinoe

Robby the Robot

饰：Robby

Harold Stone

Harold Stone

饰：Gen. Swayne (as Harold J. Stone)

罗伯特哈里斯

Robert H. Harris

饰：Prof. Frank Allerton

Dennis McCarthy

饰：Col. Macklin

Alexander Lockwood

饰：Arthur Kelvaney

约翰·奥马利

John O'Malley

饰：Prof. Baine

Rayford Barnes

饰：Capt. McLaren (uncredited)

盖奇克拉克

Gage Clarke

饰：Dr. Bannerman (uncredited)

海伦·克利布

Helen Kleeb

饰：Miss Vandergrift (uncredited)

Alfred Linder

饰：Martin,Computer voice (uncredited)

Marvin Miller

饰：Robby the Robot (uncredited)

艾维·摩尔

Alvy Moore

饰：Scientist #4 (pranks scene) (uncredited)

Jefferson Dudley Searles

饰：Prof. Foster (uncredited)

Gary Vinson

饰：Young soldier (uncredited)

Ralph Votrian

Ralph Votrian

饰：MP at gate (uncredited)

Than Wyenn

饰：Prof. Zeller (uncredited)

哈罗德·J.斯通

Harold J. Stone

饰：Gen. Swayne

迈克尔米勒

Michael Miller

饰：2nd Gate Sergeant