Space Brothers: Number Zero

Hiroaki Hirata

Mutta Nanba (voice)

KENN

Hibito Nanba (voice)

Akio Otsuka

Brian Jay (voice)

Kinryu Arimoto

Eddie Jay (voice)

Fumihiko Tachiki

Jason Butler (voice)

Kazuki Iio

Ebio Sakai (voice)

Mayumi Tanaka

Mayumi Nanba (Nanba's Mother) (voice)

Miyuki Sawashiro

Mutta Nanba (young) (voice)

Yuko Sanpei

Hibito Nanba (young) (voice)

Daishiro Hano

Koiguchi (voice)