Linda Masson
Katsura Mafune / boy in red jacket (voices)
Barry Haigh
Akira Ichinose / Tsuda / Akatsuki I and II crew members / radio announcer / Third Planet henchmen (voices)
Matthew Oram
Dr. Mafune / Professor Ota / defense commander / Kusakari / Third Planet henchmen / soldiers / EAS announcer (voices)
Michael Ross
Jiro Murakoshi / Mugal / Black Hole Planet 3 henchmen (voices)
Peter Gilchrist
Chief Tagawa / Captain Nakatani / Akatsuki I and II crew members (voices)
Stuart Varney
Yuichi Wakayama / Yamashita / Akatsuki I and II crew members / Third Planet henchmen (voices)
Aileen Bridgewater
Yamamoto / boy in pink jacket / fisherman's wife (voices)
