William James Moriarty was the protagonist in "Moriarty The Patriot", his real name is unknown, having assumed the name of his deceased adoptive brother at a young age. His arch nemesis is Sherlock Holmes and he's a professor of mathematics, as well as a crime consultant. Yet however, they've gained a trust in each other after what had happened in the Final Problem. William was searching or making the country cleanse with sins, making himself a killer to be able to achieve his purpose.