​Physical Appearance: Neat, jet-black hair with a soft fringe and an impossibly innocent, clear complexion. Wears tailored police uniforms or unassuming, cozy knitwear. His posture is polite and approachable, carrying the quintessential "boy-next-door" charm with gentle, warm eyes that instantly put people at ease. ​Personality: Kind-hearted, empathetic, and deeply dutiful. He goes out of his way to help stray animals and elderly neighbors. However, beneath his mild-mannered exterior lies a razor-sharp mind and an unsettling, calm precision during high-stress crises.

​Physical Appearance: Unkempt, tousled hair, raw stubble, and intense, sleep-deprived eyes. He sports beat-up leather jackets, dark trench coats, and a heavy-set stance that looks ready for a brawl at any second. His face carries a rugged, battle-worn edge filled with suppressed rage. ​Personality: Aggressive, impulsive, and notoriously reckless. Driven not by bureaucratic duty, but by a consuming desire for vengeance. Despite his explosive temper and self-destructive habits, he harbors a fiercely protective instinct for those he considers his own.

​Physical Appearance: Strikingly pale skin, razor-sharp cheekbones, and an imposing, tall silhouette. Dressed in immaculate surgical scrubs or tailored, all-black minimalist suits. His jet-black hair and deeply hooded, unreadable eyes give him a chillingly aristocratic and lethal aura. ​Personality: Highly intelligent, clinical, and completely detached. As a elite neurosurgeon, he operates with flawless precision and zero displayed empathy. His quiet, calculating nature leaves a trail of suspense and suspicion wherever he goes.