古谷徹

Issei Yuuki (voice)

Hideyuki Tanaka

Jeff (voice)

永井一郎

Chief Kodai (voice)

富山敬

Manabu Yamato (voice)

Keiko Han

Mayu Hoshino (voice)

Masako Nozawa

Mī-kun (voice) / Gugi (voice)

武藤礼子

Hannah (voice) / Narration (voice)

戸谷公次

Tsuyoshi Yūki (voice) / Yuri (voice)

塩屋浩三

Jin Ren (voice)

松本零士

Leiji Matsumoto (voice)

池田昌子

Fū the Alien (voice) / Yūki's Mother (voice)

つかせのりこ

Yūki's Grandmother (voice)

槐柳二

Yūki's Grandfather (voice)

麻上洋子

Simba (voice)

山本百合子

Eri Yūki (voice)

勝間田具治