Beautiful, Athletic, flared ribbed, Young Korean woman, Tall and Slim, 24 years old, Oval-shaped face, small bulbed nose, full lips, has monolid coffee brown eyes, Long hair that reach to her calves and braided into a dragon braid, inherits purple demon patterns that glow pink when under stress. Her eyes can shift from brown to gold with a slitted pupil and hands become demon claws, half-demon half-human. 5'4"-5'5" in height. Confident, ambitious, hardworking, protective, workaholic, determined, secretive, and insecure. She has many walls built up around her. A part of HUNTR/X and Birthday is October 23. Mother is Full Hunter (Mi-yeong Ryu) and a Unknown Demon birth dad. Her mother died when Rumi was an infant and was taken in by Celine, her mother's friend.

Jinu is the complex, captivating, and initially antagonistic leader of the demonic K-pop boy group Saja Boys in KPop Demon Hunters, a 400-year-old former human musician whose striking appearance and alluring stage presence, characterized by a classic K-pop idol look with dark hair, a confident demeanor, and a charismatic smile, belie a deeply conflicted and tormented personality shaped by a tragic past. His backstory reveals that centuries ago, as a human struggling with extreme poverty alongside his family, he made a desperate bargain with the demon king Gwi-Ma, receiving a beautiful voice and a pathway to fame that lifted his family out of destitution, only for him to be condemned to the demon realm, forever haunted by the guilt of his family's subsequent downfall and the lingering shame of abandoning them for power and personal gain. This immense, centuries-old regret manifests in a desire to have his human memories erased by Gwi-Ma, believing it would free him from his suffering, yet his interactions with Rumi, the half-demon leader of the rival human girl group HUNTR/X, begin to stir his dormant humanity and create a profound, almost romantic connection. Despite his initial manipulative tactics, such as fabricating a shared half-demon past to gain Rumi's trust and working to weaken the Honmoon (a magical barrier protecting humans) by draining fan energy for Gwi-Ma, Jinu finds himself increasingly drawn to Rumi's idealism and resilience, developing genuine feelings that pull him between his demonic servitude and his rediscovered conscience; ultimately, in a climactic act of self-sacrifice, he shields Rumi from Gwi-Ma's fatal attack, merging his restored soul with hers to empower her to defeat the demon king, thereby finding redemption for his past and definitively concluding his arc of internal struggle and eventual altruism.