Full cast of Me and the Alien MuMu

Momo Harumi

Sakurako Umeyashiki (voice)

24 episodes

Etsuko Kozakura

MuMu (voice)

24 episodes

Yasuyuki Kase

Decimal (voice)

24 episodes

Gakuto Kajiwara

Akihiro Tsurumi (voice)

24 episodes

Yuriko Hibi

Miwa Samezu (voice)

24 episodes

Hidenobu Kiuchi

Wataru Tenkubashi (voice)

24 episodes

Kentaro Kumagai

Tamotsu Rokugou (voice)

24 episodes

Yukiyo Fujii

Sonoko Kagetsu (voice)

24 episodes

Karin Takahashi

Siberia (voice)

24 episodes

Katsuyuki Konishi

Junichirō Anamori (voice)

24 episodes