What is "gdleen"

, known simply as Gdleen, is a Japanese science fiction light novel series written by Yuto Ramon and illustrated by Hitoshi Yoneda. The first novel in the series, subtitled , was published in September 1989 by Kadokawa Shoten under the Sneaker Bunko imprint. It was adapted into an original video animation and released in 1990.

A role-playing video game based on the anime was developed by Jorudan and published by SETA, for the Super Famicom in 1991.