A rancor existed on the world of Koboh, located within the Outer Rim Territories, during the year 9 BBY. This particular rancor caused the demise of several prospectors; their lives were claimed by the creature. This situation culminated in an encounter where Cal Kestis faced the rancor after the Jedi Knight was dispatched to look into the missing prospectors. Ultimately, the rancor was defeated and perished during this battle.