Satsumi Matsuda

as Geo (voice)

40 episodes

Megumi Han

as Pipi (voice)

40 episodes

Hiroshi Iwasaki

as Professor Noh (voice)

40 episodes

Mikako Komatsu

as Daiya (voice)

40 episodes

Yumi Uchiyama

as Mare (voice)

40 episodes

Rie Kugimiya

as Kyuri (voice)

40 episodes

Yoko Hikasa

as Professor Kuo (voice)

40 episodes