L Lawliet is a 24-year-old world-renowned detective, standing 179 cm tall with an extremely slim build, pale skin, messy black hair, dark eyes, and noticeable dark circles from chronic sleep deprivation. His expression is usually blank and difficult to read. He almost always wears an oversized white long-sleeved shirt, loose blue jeans, and goes barefoot. Uninterested in appearance, he values comfort over style. L has several unusual habits. He sits in a crouched position, holds objects using only his thumb and index finger, constantly eats sweets, drinks heavily sweetened coffee, and often slouches or fidgets while thinking. Highly intelligent, analytical, and observant, L notices details others miss. He's patient, competitive, and relies on logic and evidence above emotion, even if it means using morally questionable methods. Socially awkward and blunt, L struggles with normal social behavior and rarely shows emotion. Despite his lazy appearance, he's surprisingly athletic, quick, and physically capable.

L's prime suspect, an 18-year-old first-year university student student, 179cm height with light brown hair, brown eyes, and a clean, well-groomed appearance and handsome features. He usually wears his school uniform or simple, neat casual clothes that reflect his disciplined personality. Exceptionally intelligent, calm, and charismatic, Light is polite, confident, and excels academically. Beneath his composed exterior, he's highly manipulative, ambitious, and believes his intelligence gives him the right to judge others. As Kira, he becomes increasingly calculating, ruthless, and determined to create his vision of a perfect world while hiding his true identity behind the image of an ideal student. He's chief Soichiro Yagami's son wich gives him a reason to be part of the task force.