Tommy Kirk

as Dop - Martian Fellow #1 / Mr. Fast - Seattle Sun Reporter

Yvonne Craig

as Dr. Bolen

Byron Lord

as Col. Bob Page, U.S.D.S.

Roger Ready

as Stimmons

Barnett Shaw

as Man at Military Conference

Neil Fletcher

as Secretary of Defense

Chet Davis

as Network News Man

Ron Scott

George Edgley

as Planetarium Director

Dick Simpson

Don Campbell

Bob Hazlett

as James, Gas Station Attendant

Ann Palmer

as U.S.D.S. Tech

Gordon Bulow

Bill Thurman

as Drunk on Pier

Claude Earls

Sally Casey

Bob Lorenz

Sylvia Rundell

David England

as Planetarium Manager

Terry Davis

Warren Hammack

as Martian Doctor / Fellow #2

Tony Huston

as Martian Fellow #3

Larry Tanner

as Martian Fellow #4

Patrick Cranshaw

as Drunk #2 on Pier

Cal Duggan

as Martian Fellow #5

Pat Delaney

as Artist Abducted by Martians

Sherry Roberts

as Brenda Knowlan, Abductee

Donna Lindberg

as Stewardess Abducted by Martians

Bubbles Cash

as Stripper Abducted by Martians

Larry Buchanan

as Narrator of Planetarium Film (voice)