Kuki Urie serves as a Ghoul Investigator within the Commission of Counter Ghoul (CCG), operating as a key member of the Quinx Squad—humans augmented with ghoul traits through surgical implants. His distinctive appearance features purple undercut-styled hair, triangular eyes with sharp diamond-shaped irises, and two moles beneath his left eye. He adheres to the standard CCG uniform, layered with a white trench coat and black gloves, frequently accessorized with earphones or a briefcase. Driven by ambition and cold pragmatism, Urie’s early demeanor is shadowed by resentment over the death of his father, Special Class investigator Mikito Urie, who perished during a mission against the One-Eyed Owl. This trauma fuels his obsession with career advancement and a simmering grudge against the Kuroiwa family, whom he accuses of abandoning his father. His relentless pursuit of promotion manifests in manipulative tactics, such as withholding vital intel from teammates and prioritizing personal glory over squad cohesion. He views his mentor, Haise Sasaki, with thinly veiled jealousy, perceiving him as a rival to surpass. The Torso Investigation exposes the flaws in Urie’s lone-wolf mentality when his recklessness nearly costs teammate Shirazu his life. During the Auction Raid, his overuse of his kagune’s Frame 4 triggers a physical and emotional collapse, laying bare his deep-seated fears of inadequacy. This breakdown marks a turning point, as Mutsuki’s intervention helps him regain control—a moment that inadvertently exposes Mutsuki’s transgender identity through scent recognition. Shirazu’s death in the Tsukiyama Extermination Operation shatters Urie’s self-centered worldview. Witnessing Shirazu’s demise and the theft of his corpse by Aogiri Tree propels Urie toward a profound transformation. He vows to recover Shirazu’s body and uphold his legacy, shifting his focus from personal ambition to protecting his squad. This resolve intensifies after Sasaki’s departure, forcing Urie to shoulder leadership of the Quinx Squad, including mentoring new recruits. Urie’s relationships undergo significant evolution. His initial contempt for Mutsuki evolves into mutual respect following their shared vulnerability during his breakdown. With Saiko Yonebayashi, his manipulative tendencies give way to genuine trust after she halts his kagune rampage by openly expressing concern. Though his bond with Shirazu begins as rivalry, it becomes foundational to his growth, with Shirazu’s absence later haunting him as a fracture in the team’s unity. As a Quinx, Urie wields a Koukaku-type kagune that forms armored blades and shields. Enhanced strength, regeneration, and sensory perception define his physical traits, though early struggles with kagune control drive self-destructive habits like biting his arm to reactivate power. His primary weapon, the Noro-derived quinque Ginkui, unleashes autonomous tentacle-like strikes. While mastering his hybrid physiology over time, repeated Frame releases jeopardize his humanity, culminating in a temporary full ghoul transformation during a clash with Donato Porpora. Later arcs highlight Urie’s growth into a tactical leader. He intervenes to protect Mutsuki from Torso, advocates for Shirazu’s sister, and shifts focus from vendetta against the Kuroiwa family to broader justice. Despite challenges—including Sasaki’s defection and CCG corruption under Furuta—Urie steadfastly safeguards his team, embodying his transition from solitary ambition to collective stewardship.