宇宙なんちゃら こてつくん

藤原夏海

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)