Koodie was a tooka doll of a gray color, a plaything belonging to Jyn Erso during her youth. She owned it when residing on the planet Lah'mu with her parents, Galen and Lyra Erso, at her family's homestead. Koodie, along with Jyn's other playthings such as her best friend Stormie, were typically stored inside of her toybox. However, in 13 BBY, it was positioned on her bed, along with a selection of her other toys, when the forces of the Galactic Empire came to the homestead searching for Galen.
Koodie's initial appearance was as a prop within the movie Rogue One: A Star Wars Story, which debuted in North America on December 16, 2016. Although the film did not identify this prop by name, it was given the name Koodie in the Star Wars: Rogue One: The Ultimate Visual Guide, authored by Pablo Hidalgo, which was published concurrently with the movie's release.