Gravion

"Gravion" is an anime TV series made by Gonzo. It aired in Japan from October 7 to December 16, 2002, spanning 13 episodes. In 2004, a follow-up series titled "Gravion Zwei" was released, airing from January 8 to March 25 in Japan with 12 more episodes, resolving lingering questions from the first season. Masami Ōbari created and directed both "Gravion" and "Gravion Zwei," with mecha designs by Kunio Okawara. ADV Films later released both series in the United States.