Nitaro/Nitaboh

Ginnosuke Mutō

Shinobu Fujiwara

Hiroshi Kishida

Armada

Tochirō Ōyama

Erutron

Jûzô Saejima

Dr. Smith

Hiyoshi Gou

Professor Hajime Akebono

Dr Tsuchiya

Plakia Lexshue

Marine Boy

Professor Fumble

Dr. Kyoji Ogami

Tochiro/Oyama Toshiro

Princess Sapphire

Shigeru Akamatsu

Shizuka Nakamoto

Tails

Taylor Kojima

Raool

Shu Kurenai

Demetrios

Jō Kurumada

Doctor Iza/Isaburō Yatsushiro

Ichirou Watanabe

Momotarou Morikawa

Ichirou Watanabe/Bewan