Jio Loster was a male human who found himself in the custody of the Canto Bight Police Department. He was incarcerated within a cell located at the Canto Bight police headquarters on the planet of Cantonica during the year 34 ABY. The criminal known as DJ managed to break free from his adjacent cell utilizing a skeleton key, prompting Loster and his fellow inmates to extend their hands through the cell bars towards DJ. Despite their pleas, DJ departed without releasing them. While confined, Loster was seen wearing a black jacket associated with the Guavian Death Gang, complemented by black trousers, black gloves, and black boots. Further, he sported yellow kneepads and an unauthorized x-ray monocle. Loster's physical attributes included black hair, light-colored skin, and green eyes.
The initial appearance of Jio Loster occurred in the movie Star Wars: Episode VIII The Last Jedi. This film premiered on December 15, 2017. Though unnamed within the movie itself, the character's identity was established in Star Wars: The Last Jedi: The Visual Dictionary. This companion book, authored by Pablo Hidalgo, was published alongside the film's release.