Ylesia, a terrestrial planet located in the Outer Rim Territories segment of Hutt Space, served as the original homeworld for the reek species, alongside the Codian Moon. Situated within the Hutt Space sector of the galaxy's Outer Rim Territories, it was connected to Teth and Rorak via established hyperspace routes. Maz Kanata, the former pirate queen, identified it as a noteworthy location on a navigational chart included within the Smuggler's Guide, a book attributed to she.
Within the established canon, Ylesia's initial mention occurred in the 2015 re-release of Journey Through Space, a book intended for young readers and authored by Ryder Windham. The planet's origins can be traced back to the Star Wars Legends timeline, making its debut in The Paradise Snare, a 1997 novel penned by A. C. Crispin.