Fellil was a Twi'lek female Jedi Master who served the Jedi Order and the Galactic Republic during the Cold War. Assigned to the planet Alderaan to aid House Organa, Fellil was hunted by the Sith Lord Mahish, but Fellil and a group of Advozse mercenaries hired by Organa ambushed Mahish in the mountains of Kaamos Territory, killing him. However, Imperial forces stormed the mercenaries' camp in the Fornaak Falls Cavern, killing Fellil and the mercenaries.