Yoshirō Kitahara

as Shoichi Doi (51 episodes)

as Muto (1 episode)

as Professor Taro Kosaka (1 episode)

as Ono

as Goro Nanjo

as Seiju

as Masao's Father

as Dr. Aoki

as Professor Inui

as Professor Amano

as Mr. Sakurai

as Mitsunari Ishida