James Moriarty

James Moriarty was the arch-enemy of Sherlock Holmes.

Biography
In order to investigate Baron Maupertuis, Moriarty used the alias O'Connor and donned a ginger wig as part of his disguise.

His work on the binomial theorem impressed the Académie Francaise. (PROSE: The Death of Art) He wrote a paper on the mathematics of folding higher dimensions (PROSE: All-Consuming Fire) and his book On the Dynamics of the Asteroid (PROSE: The Death of Art, The Book of the Enemy) first introduced the Theory of Relativity. (PROSE: The Book of the Enemy)

He died in 1893. (PROSE: The Found World)

By one account, "Jimmy Moriarty" was a 21st century scientific genius who was given a method of ritualistic time travel by the Celestis during the War in Heaven. Moriarty conducted a time experiment by sending Thomas Corkle to the late 19th century to try to prevent Sherlock Holmes from becoming a successful detective. (PROSE: Erasing Sherlock)

Moriarty also existed in the Land of Fiction as a fictional character. (COMIC: Character Assassin) Many scholars believed that Arthur Conan Doyle based the character of Moriarty after Simon Newcomb. (PROSE: The Baker Street Dozen) A number of Moriarty Remakes were made in the City of the Saved, many of whom attacked the Great Detective Agency. (PROSE: Eliminating the Impossible, The Baker Street Dozen)

Behind the scenes

 * Moriarty has been played by Paul Freeman in the film Without a Clue, Philip Locke on stage and Ronald Pickup in a radio play.
 * Doctor Who producer Barry Letts and script editor Terrance Dicks confirmed that the Master was devised as "the Moriarty" to the Doctor's "Sherlock Holmes". (DOC: Life on Earth)