Katsuhiko Sasaki

as Hennich (voice)

as Takenaka (voice)

as Master (voice)

as Soldier with Glasses

as Son Mundok / Son Mun-Deok (voice)

as Professor Mazaki

as Biologist Akira Ichinose

as Inventor Goro Ibuki

as Chuang Hang (voice)

as Professor Yoshi

as Yoshihama, Nishiyama's Assistant

as Communications Officer Miyake

as Eihara Shozo

as School principal

as Toshikazu Nagatsuka

as Oshima

as Hitoshi Kusakabe

as Kazuo Kuroiwa

as Yoshinaga

as Toshiyuki Hasebe

as Masaki Daidoji

as Masayuki Takebayashi

as Matsuda Shigeru

as Michio Yoshikawa

as Agematsu

as Tarō Uesugi

as Tarō Uesugi, Yoyo Employee

as Tsurugi (voice)

as Yamada

as Hayakawa Shingo