- Akira Yamaguchi
- Â Takao Nishizumi unknown episodes
- Mitsunori Nomura
- Â Takeru Ibuki (Monster Prince) unknown episodes
- Yoshinori Nomura
- Â Mitsuru Ibuki unknown episodes
- Kazuyuki Senba
- Â Seiichi Ibuki unknown episodes
- Kazuko Takamori
- Â Asako Ibuki unknown episodes
- Katsu Itô
- Â Capt. Nakamaru / ... unknown episodes
- Koinosuke Ogami
- Â Army Cmdr. Nakasone unknown episodes
- Takamitsu Watanabe
- Â Kumaku Kuse unknown episodes
- Franz Gruber
- Â Prof. Oliver unknown episodes
- Junkichi Kamada
- Â Sgt. Hashiba unknown episodes
- Taizen Shishido
- Â Pvt. Shishido unknown episodes
- Yasuhiro Tajiri
- Â Pvt. Tajiri unknown episodes
- Misaki Ryûji
- Â Nessie the Dinosaur (suit actor) unknown episodes
- Celia Paul
- Â (1968) unknown episodes
- Oikawa Hironobu
- Â Seiichi Ibuki unknown episodes
