The guardians known as the Ossus Keepers were responsible for the upkeep of the safeguarded collections within the Hall of Knowledge of the Great Jedi Library situated on the planet Ossus. Furthermore, they provided personalized assistance to individuals seeking guidance and solutions.
The narrative of the Ossus Keeper robes found in the game Star Wars: Knights of the Old Republic II: The Sith Lords includes a reference to the Ossus Keeper.