Robert Vaughn

as Prof. Allan Duncan

Christopher Lee

as Captain Rameses

Helen Shaver

as Betty Duncan

Daniel Pilon

as Anaxi

Tiiu Leek

as Phi

Henry Ramer

as Malcolm

Victoria Lynn Johnson

as Gazeth

Doreen Lipson

as Dorothy

Kate Parr

as Diane Duncan

Sherri Ross

as Sagnac

Linda Rennhofer

as Joan

Richard Fitzpatrick

as Joe

Ted Turner

as Zhender

Sean McCann

as Carl

Bob Warner

as Air Force General

Jonathan Welsh

as Missile Officer

Kurt Schiegl

as Rudi