Mário Luís Zurita is a detective with the Royal Investigative Services and a major supporting character. He works alongside Keith Flick and Lily as a co-worker within the organization. He is an adult male with short blonde or yellow hair and brown eyes. His role in the story involves participating in the investigation of the Killer B case and other criminal activities, often assisting his colleagues. His motivations are tied to his duties as a detective, and he maintains professional relationships with the other members of the RIS. While detailed personal background and development are not extensively explored, he appears as a consistent presence in both the first season and its continuation, B: Succession. His abilities are those of a skilled investigator operating within the Royal Investigation Service.