Uchuu Kyoudai

Hibito Nanba

Main

Voz: Yuuko Sanpei

Mutta Nanba

Main

Voz: Hiroaki Hirata

Serika Itou

Supporting

Voz: Miyuki Sawashiro

Sharon Kaneko

Supporting

Voz: Masako Ikeda

Kenji Makabe

Supporting

Voz: Masayuki Katou

Chousuke Nanba

Supporting

Voz: Choo

Mayumi Nanba

Supporting

Voz: Mayumi Tanaka

Freddie Saturn

Supporting

Voz: Rintarou Nishi

Tadashi Hoshika

Supporting

Voz: Show Ryuzanji

Tamura

Supporting

Voz: Mariko Hayashi

Yoshihara

Supporting

Voz: Toshiharu Nakanishi

Rinpei Itou

Supporting

Voz: Toshitsugu Takashina

Itou Serika no Haha

Supporting

Voz: Mana Miyamoto

Yamato Mizoguchi

Supporting

Voz: Shintarou Asanuma

Manabu Sawaki

Supporting

Voz: Takeshi Ooba

Shigeo Nasuda

Supporting

Voz: Yutaka Aoyama

Damien Kweller

Supporting

Voz: Hiroshi Tsuchida

Karen Jones

Supporting

Voz: Miwa Kohinata

Fumi Aotake

Supporting

Voz: Toa Yukinari

Ozzy Smith

Supporting

Voz: Tadashi Nakamura

Mrs. Smith

Supporting

Voz: Tamaki Taura

Emi

Supporting

Professor

Supporting

Reiji Nitta

Supporting

Voz: Takanori Hoshino

Yasushi Furuya

Supporting

Voz: Ryou Naitou