Chiyoko Kawashima

as Kei Yuki / Mayu Ooyama (voice)

Akira Kamiya

as Tadashi Daiba (voice)

Noriko Ohara

as Miime / St. Giovanna Headmistress (voice)

Makio Inoue

as Captain Harlock (voice)

Hiroshi Otake

as Yattaran (voice)

Akiko Tsuboi

as Witch Aman (voice)

Hidekatsu Shibata

as Mitsuru Kiruda / Narrator (voice)

Joji Yanami

as Dr. Zero / Prime Minister (voice)

Kenichi Ogata

as Chief Engineer Maji (voice)

Noriko Tsukase

as Masu Tsunajima (voice)

Kazuhiko Inoue

Banjo Ginga