Dick Miller

Dave Boyer

Susan Cabot

Sybil Carrington

Richard Devon

Dr. Pol Van Ponder

Robert Shayne

Cole Hotchkiss

Michael Fox

Jason ibn Akad

Eric Sinclair

Dr. Howard Lazar

Jered Barclay

John Compo

John Brinkley

Brunet Helmsman of Satellite

Bruno VeSota

Mr. LeMoine

Mitzi McCall

Mitzi

Roy Gordon

The President

Beach Dickerson

Crewman with Gun

Roger Corman

Ground Control (uncredited)