Endor served as the assumed name of a 500-X shuttle that Han Solo, Chewbacca, and Kyp Durron had purloined.
The aforementioned starship was commandeered by Han Solo, Chewbacca, and Kyp Durron as they fled from both Kessel and Moruth Doole. When Han unexpectedly encountered the Star Destroyer Gorgon in the Maw, he spontaneously invented the ship's designation.
Kevin J. Anderson conceived of the Endor, and the vessel's sole appearance occurred in the novel Jedi Search. Subsequently, The Complete Star Wars Encyclopedia featured an entry about it. However, the encyclopedia misidentified it as a Lambda-class shuttle, a contradiction of its description in Jedi Search as a 500-X shuttle.