Narissa Delau held a position within the Imperial Reclamation Service under the Sith Empire. As a member of an expedition dispatched to Yavin 4, she participated in the discovery of several Sith artifacts dating back to the time of Exar Kun. During the dig, a Massassi ambushed the team, resulting in the death of Harris and the dispersal of the remaining members. After healing from her injuries, Doctor Delau was informed by her commanding officer, Talos Drellik, about the impending arrival of the Alliance Commander to assess the situation, and she subsequently compiled a report detailing their discoveries for their review.