宇宙なんちゃら こてつくん

Fujiwara Natsumi

— Kotetsu (voice)

ムロツヨシ

— DAXA-kun (voice) / Narrator (voice)

竹達彩奈

— Hikaru (voice)

Kappei Yamaguchi

— Jii-chan (voice)

玉木雅士

— Lou (voice)

Jun'ya Enoki

— Niko (voice)

山口茜

— Otama (voice)

Ayasa Ito

— Michiko (voice)

Yutaka Aoyama

— Principal (voice)

小山剛志

— Tobio (voice)