Ban You serves as a vassal of the Ou family's main branch and adjutant within the Gyoku Hou Army, dedicated to supporting and advising its commander, Ou Hon. His deep connection to the Ou family stems from being personally assigned by Ou Sen to oversee Ou Hon's military upbringing. During Ou Hon's childhood, Ban You instructed him rigorously in military strategy, tactical theory, and the fundamentals of Qiang-style spear combat. He observed Ou Hon's relentless dedication firsthand, enduring harsh conditions that left his palms bloodied and pushed him through fevers during extreme weather drills, recognizing both innate talent and disciplined work ethic. A notable incident saw Ou Sen intervene to correct Ou Hon's spear technique, prompting Ban You to acknowledge the need for more advanced instruction. After Ou Hon joined the Qin military, Ban You became his steadfast adjutant and right-hand man, remaining at his side through campaigns and the unit's evolution. Physically, Ban You appears as an aged warrior, estimated in his late 50s to early 60s. His build bears the scars of decades of active warfare. Long grey hair is typically secured in a ponytail, complemented by a grey beard and mustache, all reflecting extensive battlefield experience. His personality combines a gruff exterior and belief in noble caste superiority with profound, unwavering loyalty to Ou Hon. He commands a presence that instills immediate discipline in troops, even outside his direct command. Despite a stern demeanor, he displays sentimentality over Ou Hon's achievements or safety, shedding tears of joy at victories or tears of worry in peril. He is prone to emotional outbursts during intense combat, expressing shock and frustration against formidable foes like Earl Shi or Rin Ko. His temperament surfaces when encountering indiscipline, such as chastising soldiers for overloading siege equipment. Ban You participated in multiple significant campaigns. He first appeared with the Gyoku Hou Unit during its encounter with the Hi Shin Unit and later in engagements like the Sanyou Campaign. At Kourou city, he facilitated deploying an Ou family siege tower; at Kinrikan, he tried preventing soldiers from overloading another. His combat role was demonstrated on the Rui Plains, actively directing troops and intervening to protect Ou Hon from Rin Ko. He blocked a potentially fatal strike, suffering injury and having his spear bent, expressing astonishment at Rin Ko's counter to Ou Hon's techniques. Recognizing Mou Ten's strategic insight, Ban You detached part of the Gyoku Hou to secure an escape route. Years later, during the Western Zhao Invasion at Shukai Plains, he faced near death from the Rai'un Unit, rescued by Shin and Kyou Kai. Following the incapacitation of key commanders, he played a crucial role coordinating the right wing, advocating for the Hi Shin Unit to assume headquarters leadership. As adjutant, Ban You functions as a capable military commander, rallying troops, issuing commands, and offering tactical counsel. His leadership inspires loyalty, with soldiers risking themselves to save him when surrounded. He successfully coordinated with commanders from other armies, like the A Kou Army, during critical junctures. Proficient with a spear, demonstrated by his defensive action against Rin Ko, his primary strength lies in organizational command and tactical execution over individual combat mastery, possessing a solid understanding of battlefield strategy and unit coordination.