Shoichi Tsukioka
Hiroshi Koizumi
Shoichi Tsukioka (voice)
Keye Luke
Doctor Yamane
Takashi Shimura
Foreman Shibeki
Sonosuke Sawamura
Member of Osaka's SDF Tajima
Yoshio Tsuchiya
President of Fishery Koehi Yamaji
Yukio Kasama
Doctor Kyohei Yamane, Commander of Osaka's SDF Terasawa, President of Fishery Koehi Yamaji (voices)
Paul Frees
Commander of Landing Craft Ikeda
Ren Yamamoto
Commander of Landing Craft Ikeda (voice)
George Takei
Commander of Osaka's SDF Terasawa
Seijirô Onda
Convict Leader
Shin Ōtomo
Convict
Senkichi Ōmura
Hidemi Yamaji
Setsuko Wakayama
Gigantis
Haruo Nakajima
Angurus
Katsumi Tezuka
Shōichi Hirose
Hidemi Yamaji (voice)
Aya Oyama
Kôji Kobayashi
Minoru Chiaki
Koji Kobayashi / Narrator (voices)
Marvin Miller
Dr. Tadokoro
Masao Shimizu
Yasuko Inouye, Koji's girl
Mayuri Mokushô
Osaka Chief of Police
Takeo Oikawa
Chief of Civil Defense
Minosuke Yamada
Special Effects Assistant
Hajime Tsuburaya
Special Effects
Visual Effects Camera
Masakatsu Asai
Producer
Paul Schreibman
Original Story
Ib Melchior
Music
Masaru Satō
Assistant Costume Designer
Yoshio Suzuki
Modeling
Visual Effects Art Director
Yasuyuki Inoue
Tomoyuki Tanaka
Tohl Narita
Shigeru Kayama
Novel
Visual Effects
Sadao Iizuka
VFX Director of Photography
Sadamasa Arikawa
Eizo Kaimai
Costume Design
Director
Motoyoshi Oda
Teizô Toshimitsu
Sculptor
Eiji Tsuburaya
Visual Effects Director
Hugo Grimaldi
Ed Watson
Writer
Screenplay
Shigeaki Hidaka
Lighting Technician
Masaki Ônuma
Director of Photography
Seiichi Endo
Production Design
Teruaki Abe
Associate Producer
Edmund Goldman
Music Editor
Rex Lipton
Production Manager
Kazuo Baba
Takeo Kita
Takeo Murata
Editor
Sound Effects
Ichirô Minawa
Paul Sawtell
Yasuei Yagi
Masao Shirota
First Assistant Director
Eiji Iwashiro
Kanju Yagi
Bert Shefter
Koichi Takano
Motoyoshi Tomioka
Sound Effects Editor
Al Sarno
Kazuji Taira
Yoshio Irie
Akira Watanabe
Shuzaburo Araki
Yôichi Manoda
Hiroshi Mukoyama
Sound Recordist
Masanobu Miyazaki
Herschel Burke Gilbert