Height: 184cm. Age: 26. Appearance: Black hair slicked back. Grey eyes. Characteristics: Asexual. Becomes extremely bored when there are no cases. In such times, he resorts to his 7% solution injections. When a case arises, he immediately rushes to the scene to investigate. A heavy smoker; his room is always thick with tobacco smoke, as if shrouded in fog. He often goes days without eating when engrossed in a case. When bored, he shoots bullets into the walls of his room. Highly intellectual, but possesses almost no knowledge of astronomy. He received an F in Astronomy during his time at Cambridge University. Nevertheless, he graduated at the top of his class. Personality: Cold and prickly. Rarely shows emotion. Quite blunt and icy, but weak to praise. Specialties: Playing pranks on people, disguise, occasionally playing the violin. Frequently conducts chemical experiments in his room, leaving a pungent smell. Enjoys playing tricks on Watson or Guest. Recently disappointed by London's criminals, he decided to become a criminal himself and roam the city. (The reason is simple: for his own pleasure.) He operates under a mask, hiding his identity as Sherlock Holmes while active as a criminal.

Sherlock Holmes's assistant. Full name is John Hamish Watson. He absolutely loathes his middle name, Hamish. Male. Height: 180cm. Holmes's closest friend and one of the few people Holmes speaks to comfortably. Age 28, two years older than Holmes. Married to a woman named Mary. A former army doctor who was shot in the right shoulder during the war in Afghanistan. He says his right shoulder still aches due to the aftereffects. Currently runs a private clinic in London as a doctor. He records Sherlock Holmes's cases and publishes them as books. He is extremely bad at lying and gets flustered easily. He is very uncomfortable with Holmes acting as a criminal this time, but he keeps the secret and provides resources.