Ed Bishop

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Self (archive footage)

Captain Blue (voice)

Stimson

Self

Padre Jones

Carstairs

Sentry

Captain Blue (voice)

Stanton Case

(Unknown)

Lewis Belvedere

Card Player

Narrator (voice)

Dr. Tate

Grant

Geoffrey

Dyson Wilde

American Commentator

Gerald

Proddy

Adm. Stewart Cullinane

Wink Persiman (TV interviewer)

Dr. Deacon

Alexander

(Unknown)

Reporter

US President (voice) (uncredited)

Pinkerton

Dr. Baker

Sam Dozier

Stainless Steel (voice)

Captain Blue (voice)

Narrator (voice) (uncredited)

American reporter

Cmdr. Ed Straker

Captain Blue (voice)

Harding (uncredited)

Henry Harris

Al Peterson

Damon Runyon (voice)

Brother Bethlehem

Prof. Goonmeyer

Col. Stewart

Maj. Fox

Smith

Carson

Gang Boss (voice)

TV Announcer

(Unknown)

Victor Stackman

Commander Ed Straker

Commander Ed Straker

Operations Officer

Commander Ed Straker

Commander Ed Straker

Klaus Hergersheimer (uncredited)

Commandant Tom Decker

Army Captain (voice)

David Poulson

Aries-1B Lunar Shuttle Captain

Hawaii CapCom (uncredited)

Lt. Cmdr. Vance Cassidy (as Edward Bishop)

Lieutenant Hacker U.S.N. - Communications

Paul Starr (voice)

(Unknown)

Narrator

Narrator (as Edward Bishop)

American Astronaut (as Edward Bishop)

Ambulance Attendant (uncredited)

Vogt

Captain Blue (voice)