I'll fill you in on the first one:
Sherlock Holmes is a Victorian-era English detective who smoke a clay pipe and mumbles a lot. He's also pretty handy at deducing things, and at punching things/people. He plays violin too, if I recall correctly.
He has a partner in anticrime by the name of Dr John Watson, a former soldier. Together, THEY FIGHT CRIME!
In girum imus nocte, et consumimur igni