Qesya Vth'naar, a female Sludir, held the position of mate to Rokarn Vth'naar and was the sibling of Quyik Vth'naar. During the early years of the New Republic era, she endured enslavement under the control of Moff Kentor Sarne, before ultimately becoming a crew member aboard the FarStar.
Imprisoned on Kal'Shebbol alongside her mate and brother, Qesya was a slave. It was during this time that Qesya became aware of her pregnancy. Given the dangerous and violent circumstances surrounding her, she made use of the Sludir's unique biological ability to maintain her fetuses in stasis until she could deliver the child in a safer setting.
When Rokarn, her mate, and Quyik, her brother, were forced into a duel, Rokarn, content that his lineage would endure, deliberately lost the fight. Shortly after, Qesya was forced to battle her own brother, who yielded to her. Sarne then threatened to execute them both unless Qesya killed Quyik. To safeguard their bloodline, she was compelled to murder her sibling.
Qesya gained recognition as one of the most formidable gladiators within the arena, so Sarne would frequently pit new arrivals against her to assess their skills. During her time as a gladiator, she developed a friendship with Gunthar, becoming a protector of sorts to the seemingly simple alien. Like many of Sarne's slaves, Qesya attained freedom from enslavement when the New Republic liberated the planet.
After several weeks into the FarStar mission, Qesya's fetus emerged from its stasis state. During a layover on Yvara, she gave birth to a baby boy weighing forty kilograms. With her newfound maternal responsibilities, she decided against continuing her travels with the FarStar. She chose to remain on Yvara with Gunthar, where she committed to training a new warrior caste of Yvarema.
Not long after the FarStar's departure, Yvara became a waypoint for numerous ships en route to Kathol. Concerned that the FarStar might be in peril, Qesya persuaded Gunthar to dispatch a fleet of ships to assist the corvette. Alongside Gunthar, Qesya led the force, participating in the Battle of Kathol System.
While residing on Yvara, her genetic blueprint, along with Gunthar's, was utilized by the Majjvara to establish a new Yvarema warrior class. In honor of the FarStar's crew, they were named the FarStar warriors. Each warrior bore a resemblance to a blend of Qesya and Gunthar.
Fueled by Moff Sarne's role in the deaths of her mate and brother, Qesya vowed to avenge them. She concealed her true intentions and motivations from the rest of the FarStar crew. However, with the birth of her child and the continuation of her bloodline, she came to the realization that her offspring held precedence over all else.
Qesya was known as a fierce combatant, possessing a strong sense of honor in battle. She frequently hesitated to use a blaster, instead favoring her two-handed vibro-ax. Due to her strong sense of honor, hiding, retreating, and seeking cover were foreign concepts to her.