Isao Yamagishi

Grandiene has been waiting for the day of resurrection, the day when the planets are in the alignment of the Grand Cross. Her children descend to the Earth to make it a realm of darkness for her. Ten years prior, Doctor Tatsumi of the Tatsumi Disaster Prevention Institute predicted this event, but nobody believed him. He left his family so he could secretly develop and construct the Rescue System. Now in 1999, Doctor Tatsumi appears again to give the means to save the world to his children as the GoGoFive team.

Gravion is an anime television series produced by Gonzo. It aired in Japan from October 7, 2002 to December 16, 2002 and ran for 13 episodes. In 2004, Gravion Zwei was released and aired from January 8 to March 25 in Japan, running for twelve additional episodes, answering the questions generated from the first series. Both Gravion and Gravion Zwei are created and directed by Masami Ōbari with mecha designs from Kunio Okawara. Both series were released in the United States by ADV Films.