Akira Takarada as Yoshimura

Kumi Mizuno as Daiyo

Chōtarō Tōgin as Ichino

Hideo Sunazuka as Nita

Tōru Ibuki as Yata Kane

Akihiko Hirata as Capt. Yamoto

Jun Tazaki as Red Bamboo Commander

Toru Watanabe as Ryota Kane

Ikio Sawamura as Elderly Slave (uncredited)

Yuko Bambi as Shobijin (uncredited)

Yoko Bambi as Shobijin (uncredited)

Hideyo Amamoto as Red Bamboo Naval Officer (uncredited)

Hisaya Ito as Red Bamboo Scientist #1 (uncredited)

Tadashi Okabe as Red Bamboo Scientist #2 (uncredited)

Kazuo Suzuki as Escaped Slave (uncredited)

Shōichi Hirose as Escaped Slave (uncredited)

Chieko Nakakita as Mrs. Kane (uncredited)

Noriko Honma as Spiritualist (uncredited)

Yutaka Sada as Farmer (uncredited)

Wataru Ōmae as Newspaper Reporter (uncredited)

Ken'ichirō Maruyama as Newspaper Reporter (uncredited)

Shigeki Ishida as Newspaper Editor (uncredited)

Hideo Shibuya as Maritime Officer (uncredited)

Haruo Nakajima as Godzilla

Yû Sekita as Ebirah (uncredited)