Claiming to be “Consulting Detective”, he shares apartment 221B on Baker Street with Dr. Watson. He usually stays in the apartment waiting for police consultation or paying attention to news cases in newspapers and online.The mind responds quickly, has insight into every detail, and is rich in knowledge.

He has a strong personality, confident, aloof, and hates power. He behaves like a child when interacting with others, and is incompatible with reality.But he actually still cares about the people around him, and slowly becomes more humane and warm in the fourth season.