Space Brothers #0

Hiroaki Hirata

Mutta Nanba (voice)

KENN

Hibito Nanba (voice)

Akio Otsuka

Brian Jay (voice)

Kinryuu Arimoto

Eddie Jay (voice)

Fumihiko Tachiki

Jason Butler (voice)

飯尾和樹

Ebio Sakai (voice)

Mayumi Tanaka

Mayumi Nanba (Nanba's Mother) (voice)

Miyuki Sawashiro

Mutta Nanba (young) (voice)

Yuko Sanpei

Hibito Nanba (young) (voice)

羽野大志郎

Koiguchi (voice)

伊藤栄次

Tetsutaro Tsurumi (voice)

Hiroshi Tsuchida

Damien Kweller (voice)