Uchuu Kyoudai

Hibito Nanba

Mutta Nanba

Serika Itou

Sharon Kaneko

Kenji Makabe

Father Nanba

Mother Nanba

Freddie Saturn

Tadashi Hoshika

Tamura

Yoshihara

Machiko Itou

Yamato Mizoguchi

Manabu Sawaki

Shigeo Nasuda

Damien Kweller

Karen Jones

Fumi Aotake

Ozzy Smith

Emi

Doctor

Reiji Nitta

Yasushi Furuya

Yuuri Teshima

Ryuunosuke Tomii

Naoto Fukuda

Buddy Waters

Reporter

Linda Cliff

Takio Azuma

Apo

Michiko Komachi

Ena Kitamura

Vincent Bold

Sansei Murasaki

Brian Jay

Deneil Young

Jason Butler

Olga Tolstaya

Ivan Tolstoy

Narrator

Amanti Patel

Kei Kitamura

Kazuya Nitta

Larry Bison

Emilia Tolstaya

Carlo Greco

Olivia

Newscaster

Eddie Jay

Naoki Kitamura

Oosuke Kitamura

Yuki Makabe

Fuuka Makabe

Teijirou Azuma

Atsushi Miyata

Souichi Noguchi

Mike Davis

Andy Taylor

Walter Gates

Nimura

Shiokawa

Tsuyoshi Yamashita

Daiki Masuda

Jun Marumiya

JAXA Doctor

John Saturn

Tim Saturn

Matt Saturn

Phillip Louis

Father Kitamura

Mother Kitamura

Bold

Zack McConnell

Jack Johnson

Shigeo Morishima

Sanae Shimizu

Rinpei Itou

Mrs. Smith

Shinichi Kaneko

Pico Norton

Peter

Lowry Cuomo

Kikuo Kitamura

Yuukichi Teshima

Jennifer

Kayoko Azuma

Betty Lane

Akihiko Hoshide

Takagi

Nakagi

Hamilton

Tanuma

Anime Bangumi no Josei