Iria: Zeiram the Animation , stylized as I・Я・I・A ZЁIЯAM THE ANIMATION, is a six-episode original video animation (OVA) anime series produced by Ashi Productions and directed by Tetsurō Amino. The series serves as a prequel to the original live-action film Zeiram, taking place several years earlier when the female bounty hunter protagonist Iria is still a rookie and detailing the events surrounding her first encounter with the unstoppable Zeiram. This does somewhat contradict the films, which imply that Iria's first encounter with Zeiram was in the first film.

Zeiram , stylized as ZËIЯAM, is a 1991 Japanese science fiction film directed by Keita Amemiya. The film stars Yūko Moriyama as an extraterrestrial bounty hunter named Iria, who comes to Earth to do battle with Zeiram, a powerful alien creature. With the help of her partner—an artificial intelligence named Bob—and two ordinary Japanese electricians, Iria fights Zeiram in a virtually constructed alternate dimension known as a "Zone".