The Fellio Asteroid Belt, situated within the Outer Rim Territories, was a notable asteroid belt. The Rebel Alliance established a base within this asteroid belt at some unknown point. From this location, the rebels—a group that included several humans—maintained contact with their covert agent Gita. Gita, operating under the guise of the Tusken Raider "Urrr'k," was later brought into the Hidden Hand criminal organization. In 1 BBY, she reached out to the rebels at their base, relaying the information that the team of bounty hunters she had become a part of had commenced their hunt targeting the Dark Lord of the Sith Darth Vader. This message was received by a rebel at the base and subsequently forwarded to Aeliar, Gita's commanding officer, who was also present at the base at that time.
The comic-book series Star Wars: Target Vader, specifically the first issue, featured the Fellio Asteroid Belt. This 2019 issue, released on July 3, 2019, was a product of Marvel Comics, with writing by Robbie Thompson and illustrations by Marc Laming and Cris Bolson.