Shernisa Varless was a Human woman, a citizen of the Eternal Empire originating from Zakuul, and identified as female. Functioning as a security commander aboard Emperor [Arcann]'s Eternal Flagship, she was present in 3630 BBY when SCORPIO provided the Emperor with the coordinates of Odessen, the base of the Anti-Zakuul Alliance. Subsequently, Arcann led the flagship, along with a significant segment of the Eternal Fleet, to Odessen. During the following Battle of Odessen, Alliance forces successfully boarded the flagship. Varless confronted both Lana Beniko and the Alliance Commander in combat, ultimately resulting in her defeat and death.