Gammera the Invincible

Albert Dekker

Secretary of Defense

Brian Donlevy

Gen. Terry Arnold

Diane Findlay

Sgt. Susan Embers

John Baragrey

Capt. Lovell

Dick O'Neill

Gen. O'Neill

Mort Marshall

Jules Manning

Alan Oppenheimer

Dr. Contrare

Steve Zacharias

Sen. Billings

Thomas Stubblefield

J.T. Standish

Gene Bua

Lt. Clark

Bob Carraway

Lt. Simpson

John McCurry

A1C Hopkins

Walter Arnold

American Ambassador

Louis Zorich

Soviet ambassador

Robin Craven

British ambassador

Bernard Grant

Dr. Hidaka (voice)

Larry Robinson

Aoyagi (voice)

Paulette Rubinstein

Kyoke (voice)

Lucy Martin

Nobuyo (voice)

Corinne Orr

Toshio (voice)

Peter Fernandez

Professor Murase / Captain Foster / New York newsreader / Mr. Ueda (voices)

Kenneth Harvey

Chidori Maru navigator (voice)

Jack Curtis

news announcer (voice)

William Griffis

misc. roles (voice)

Eiji Funakoshi

Dr. Hidaka

Michiko Sugata

Nobuyo

Harumi Kiritachi

Kyoke

Sandy Howard

Director

Noriaki Yuasa

Director

Sid Cooperschmidt

First Assistant Director

Shima Abe

First Assistant Director

Barbara Robinson

Script Supervisor

Richard Kraft

Writer

Robert Myerson

Dialogue

Nisan Takahashi

Screenplay

Wes Farrell

Lyricist

Fran Wolf

Producer's Assistant

L. Jeffery Norwalk

Production Assistant

Ken Barnett

Executive Producer