List of Gravion episodes

Gravion (超重神グラヴィオン) is an anime television series produced by Gonzo. The story centres on Eiji Shigure who is searching for his missing sister Ayaka. This leads him to the castle of Klein Sandman, and there he joins the fight against the invading mechanical lifeforms, the Zeravire.

Gravion aired in Japan every Monday from October 7, 2002 to December 16, 2002 and ran for 13 episodes. Episodes 9 and 10, and 11 and 12 were shown together on the same night, leading to just an 11-week run.

The opening song for Gravion was "Nageki no Rosario" by JAM Project, the ending song was "WISH" by YURIA. Whenever God Gravion is assembled, the song "Gasshin! God Gravion!" by JAM Project feat. Masaaki Endo would play as its combination insert song in Japanese only. In the third episode of Gravion Zwei it would be performed by The Singing Maids (Ena (Mai Nakahara / Jessica Boone), Luna Gusuku (Haruna Ikezawa / Luci Christian), Thoria (Haruko Momoi / Tiffany Grant), Brigitta (Rie Kugimiya / Cynthia Martinez), Yumi (Naomi Orikasa / Nancy Novotny), Marinia (Nana Mizuki / Monica Rial) and Tulie (Mikako Takahashi / Tiffany Terrell)) with Klein Sandman (Sho Hayami / Jason Douglas) in both Japanese and English. YURIA also performs the insert song "KISS ME"

Volume 1 of Gravion was released on DVD in the United States by ADV Films on May 25, 2004, and came with a box for all three volumes. Volume 2 was released on July 20, 2004, Volume 3 was released on September 14, 2004 with a complete collection consisting of all three volumes released on January 17, 2006.

Gravion Zwei (超重神グラヴィオンZwei), was the followup to the original series, also produced by Gonzo. The series answered the questions generated from the first series.

Gravion Zwei aired from January 8 to March 25 in Japan, running for twelve additional episodes.

The opening song for Gravion Zwei was "Kurenai no Kiba" by JAM Project, the ending song was "La♪La♪Bye" by HoneyBee. Whenever Soul Gravion is assembled, the song "Enno Gasshin! Soul Gravion!" by JAM Project feat. Yoshiki Fukuyama would play as its combination insert song.

Volume 1 of Gravion Zwei was released on DVD in the United States by ADV Films on March 8, 2005 and came with a box for all three volumes. Volume 2 was released on May 3, 2005. Volume 3 was released on July 5, 2005. A complete collection was released on July 25, 2006. On March 31, 2009 ADV released the Gravion Complete Collection, containing all episodes from Gravion and Gravion Zwei in one box.

Both Gravion and Gravion Zwei were created and directed by Masami Ōbari, with Fumihiko Shimo writing the scripts and Masumi Itō composing the music.