Zegapain is a Japanese anime television series created by Sunrise staff and manga artist Takehiko Itō. Produced by Sunrise, TV Tokyo and Dentsu, it is directed by Masami Shimoda, with Mayori Sekijima handling series scripts, Takehiko Itō and Akihiko Yamashita designing the characters and Ayako Ōtsuka composing the music. The series premiered in Japan on April 6, 2006 on TV Tokyo and later BS Japan and AT-X. On October 2, 2007, Bandai Entertainment released the first Region 1 volume of Zegapain with the last volume released on August 5, 2008. Following the 2012 closure of Bandai Entertainment, Sunrise announced at Otakon 2013, that Sentai Filmworks has rescued Zegapain, along with a handful of other former BEI titles. As part of the 10th anniversary of the series, a compilation theatrical film with new scenes, titled Zegapain Adaptation (ゼーガペインADP), was released in Japanese theaters on October 15, 2016. A sequel anime film, titled Zegapain STA, is set to premiere in Q3 2024.

Bandai Namco Filmworks Inc. , previously and still famously known as Sunrise Inc., is a Japanese company owned by Bandai Namco Holdings with its business focused on production, planning and management for anime.