Cast 23

1. 

   Hiroshi Koizumi

   Shoichi Tsukioka

2. 

   Keye Luke

   Shoichi Tsukioka (voice)

3. 

   Setsuko Wakayama

   Hidemi Yamaji

4. Aya Oyama

   Hidemi Yamaji (voice)

5. 

   Minoru Chiaki

   Kôji Kobayashi

6. 

   Marvin Miller

   Koji Kobayashi / Narrator (voices)

7. 

   Masao Shimizu

   Dr. Tadokoro

8. 

   Mayuri Mokushô

   Yasuko Inouye, Koji's girl

9. Takeo Oikawa

   Osaka Chief of Police

10. 

    Minosuke Yamada

    Chief of Civil Defense

11. 

    Takashi Shimura

    Doctor Yamane

12. 

    Sonosuke Sawamura

    Foreman Shibeki

13. 

    Yoshio Tsuchiya

    Member of Osaka's SDF Tajima

14. Yukio Kasama

    President of Fishery Koehi Yamaji

15. 

    Paul Frees

    Doctor Kyohei Yamane, Commander of Osaka's SDF Terasawa, President of Fishery Koehi Yamaji (voices)

16. 

    Ren Yamamoto

    Commander of Landing Craft Ikeda

17. 

    George Takei

    Commander of Landing Craft Ikeda (voice)

18. 

    Seijirô Onda

    Commander of Osaka's SDF Terasawa

19. 

    Shin Ōtomo

    Convict Leader

20. 

    Senkichi Ōmura

    Convict

21. 

    Haruo Nakajima

    Gigantis

22. 

    Katsumi Tezuka

    Angurus

23. 

    Shōichi Hirose

    Convict

Crew 24