Robert Colbert

as A Future Man (archive footage) (uncredited)

as Tony

as Board Doctor

as Undersecretary

as Deke Braverman

as Farrell

as Blackie (segment "Amazon Women on the Moon")

as Grant Summers

as Internal Affairs

as Cmdr. George Dryden

as Elton Mathews

as Doug Phillips

as Parker Ellison

as Doug McDougall

as Vern Endicott

as Cmdr. Woody Patterson

as Jack Harrison

as Security Chief O. Bolgar

as George Kalakua

as Vic Stanley

as John Phillips

as Harry Fife

as Doug Phillipps

as Martin Bennett

as Lt. Col. Frank Bailey

as Elmo Taft

as Miles Kroeger

as Joe Barker

as Rip Guyler

as Thomas J. Morely

as Gary Dawson

as Phil Lowell

as Capt. Bartolomeo Antonio Fernandez

as Johnny Kane

as Pete Staley

as Dr. Ted Benson

as Taverner

as McHenry

as Ernie Pozen

as Phil

as Jim Vance

as Nick, chauffeur

as Deputy Pete Andrews

as Captain Jamison

as Cherokee Dan Evans

as Brent Maverick

as Asst. District Attorney F.A. Snell

as District Attorney Carl Snell

as Blane Wessels

as Blake Dorty

as Ben Crain

as Clark Henderson

as Morris

as Corporal Howie Burch

as Ray Ritter