吉姆·戴维斯

Jim Davis

饰：Dr. Quent Brady

罗伯特·格里芬

Robert Griffin

饰：Dan Morgan (as Robert E. Griffin)

芭芭拉·特纳

Barbara Turner

饰：Lorna Lorentz

爱德华多·钱内利

Eduardo Ciannelli

饰：Mahri

弗拉迪米尔·索科洛夫

Vladimir Sokoloff

饰：Dr. Lorentz

Tim Huntley

饰：Territorial agent (uncredited)

LaVerne Jones

LaVerne Jones

饰：Kuana (uncredited)

Frederic Potler

Frederic Potler

饰：Radar operator (uncredited)

乔尔·弗吕莱恩

Joel Fluellen

饰：Arobi

Lauren Currier

Lauren Currier

饰：Lorna