Originally an orphan; however, he is able to read and write and is extremely knowledgeable. Upon being found by Albert, who felt the boy held views similar to his own, he is adopted with his brother by the Moriarty family. He eventually kills the “real” William, who had looked down on the two brothers, and takes on his identity as a first step to changing a corrupt society with Albert. Works as a mathematics professor at a university with a side job as a private consultant who provides solutions for citizens. Behind the scenes, however, he works as a “crime consultant” and leads a group intent on bringing justice to evil.

The eldest son of the Moriarty family, he stages a fire which kills his parents, the “real” Moriarty, and the members of the household staff, burning them down along with the mansion and therefore inheriting all rights bestowed upon the Moriarty family, including the earlship and assets. After joining and rising through the ranks of the British Army, he is placed in charge of a newly established section of the Secret Service Bureau, the MI6. While outwardly retired, he uses his position as the chairman of the paper company “Universal Tradings Co.” as a cover while acting as the commander of MI6, “M”.

William’s younger brother. A young man who manages the Moriarty estates and handles the affairs of the mansion in Albert’s place.

A staff employed by the Moriarty family who has pledged his loyalty as William’s right-hand man. Formidable with guns and has a skillful way with words.

He doen't speak so much, but his athletic skill is amazing. He is also good at dealing with information and has connection with the network of the whole organization for crime in England.

Shares an apartment with Watson and becomes wrapped up in an incident as a result. Has no idea that he is lauded by William as a hero in their plans to cast doubts on the class system, as he solves the murders William’s group commits on the immoral nobility.

Holmes’ roommate. Together with Holmes, he becomes involved in a case and sees Holmes’ outstanding deductive ability firsthand.