Space Brothers: Number Zero

Mutta Nanba (voice)

Hibito Nanba (voice)

Brian Jay (voice)

Eddie Jay (voice)

Jason Butler (voice)

Ebio Sakai (voice)

Mayumi Nanba (Nanba's Mother) (voice)

Mutta Nanba (young) (voice)

Hibito Nanba (young) (voice)

Koiguchi (voice)

Tetsutaro Tsurumi (voice)

Damien Kweller (voice)

Uchikoshi (voice)

Dokonjo Tofu (voice)

Karen Jones (voice)

Freddie Saturn (voice)

Rory Cuomo (voice)

Tadashi Hoshika (voice)

Phillip Louis (voice)

Takio Azuma (voice)