The Koobi system, which is also recognized as the Nelvaan system, existed as a star system within the Savareen sector situated in the Outer Rim Territories. Within this system resided the planet Nelvaan, the original home of the Nelvaanian species.
The initial reference to the Koobi system appeared in the Star Wars Legends timeline within the 2005 book Labyrinth of Evil, penned by James Luceno. Although that book calls it the Nelvaan system, the StarWars.com Databank's article about the Nelvaanians calls it the Koobi system. Both names have been used in different sources since then.