Gravion

Eiji Shigure shows up at a mysterious estate looking for his missing sister and ends up swept into a bigger conflict than he expected. He becomes part of a ragtag group of pilots who operate the Gravion, a set of combining mecha used to fend off dangerous threats to Earth. The show mixes fast-paced robot battles with lighter comedic moments, and it focuses on how an unlikely team learns to work together while mysteries about their employer and the true nature of the enemy slowly surface. The first season runs thirteen episodes, and a follow-up season later returns to answer several lingering questions.

Gravion was produced by studio Gonzo and created and directed by Masami Ōbari, with mecha designs by Kunio Okawara. The original run aired in Japan from October 7 to December 16, 2002, and Gravion Zwei followed from January 8 to March 25, 2004. ADV Films handled the U.S. release.

The series didn’t pick up major industry awards, and it wasn’t a big awards-season presence. Still, it kept a steady niche audience and continued interest that justified a second season and home media releases in international markets.

Among mecha fans Gravion is remembered for its combination sequences and the involvement of Okawara, whose designs lent the robots a recognizable look. Masami Ōbari’s direction and action choreography also drew attention, giving the show a distinctive visual rhythm that helped it stand out within early 2000s robot anime, even if it didn’t cross over into mainstream pop culture.

Reception was mixed to moderate, reflected by an average user score near 6.4 out of 10 from available votes. Viewers who enjoy classic super robot elements tend to praise the energetic combat and mechanical design, while others point to uneven pacing and character beats. The second season addresses several plot questions, which helped satisfy fans who wanted a clearer conclusion.