Sherlock Holmes
A "consulting detective" that employs his fantastic skills in observation and deductive reasoning to solve all manner of bizzare crimes.
Where is he from?
Sherlock Holmes is the invention of Sir Arthur Conan Doyle, originally appearing in stories printed in 1887. He's gone on to appear in countless film, television, stage, radio, and all other concievable forms of media. While we do know specifically just what version of the character the comic is referencing, We can take a brief dip into the single most prolifically represented character in all fiction here:
Comic Appearances
GND 166 - Over the phone, Christine tells Sarah to ask Sherlock Holmes if Raoul's friend Arsène Lupin is to be trusted. Meanwhile, Sarah informs her that Agnes Nitt is going to cover for her classes, and that Skeep the Goblin, having seen Satine's movie, is eager to go to Paris as well.