Onderon was a temperate world that had been under the Sith influence for many years. As a result, many Sith have made the planet their own sanctuary. Korran Halcyon and Quietus had been heavily tied to the Beast Rider tribes of the planet. Korran once held the title of Beast Master then handed it down to his protege Quietus. Darth Apparatus frequently used the planet as a residence and resting point despite constantly being on the move.