Eiji Funakoshi

Dr. Hidaka

Michiko Sugata

Nobuyo Sakurai

Harumi Kiritachi

Kyoke Yamamoto

Yoshirō Kitahara

Mr. Sakurai

Bokuzen Hidari

Old Farmer

Fumiko Murata

Old Farmer's Wife

Jun Hamamura

Professor Murase

Jutarō Hojo

Self-Defense Force Commander

Yoshio Yoshida

Eskimo Chief

Kenji Oyama

Minister of Defense

Jun Osanai

Maru Captain

Kōji Fujiyama

US Arctic Base Commander

Ichigen Ohashi

Mr. Ueda

Munehiko Takada

Soviet Representative

Kenichi Tani

Officer

Tsutomu Nakata

Toshio's Uncle

Yūji Moriya

News Announcer

Osamu Maruyama

Atomic Energy Research Institute Chief

Yoshirō Uchida

Toshio Sakurai

Toshio Maki

Atomic Energy Research Institute Staff A

Kazuo Sumida

Atomic Energy Research Institute Staff B

Rin Sugimori

Police Station Chief

Tetsurō Takeuchi

Atomic Energy Research Institute Staff C

Junichiro Yamashita