Born in 2,075 ABY on the arctic world of Rhen Var, Ulesari was considered a remarkable specimen among the Charon—not only for her lack of Voidbirth—but also for her previously-undetected Force-sensitivity. Due to her proximity at the epicenter of the Mition Disaster, as well as her survival of the catastrophe, Savelle was one of the three existing Logos during the Extant War, and was considered to have been the most powerful of the three.