John H. Watson is the closest friend and partner of famous detective Sherlock Holmes. He is a British physician and amateur sleuth who has served in the military. John Watson was created by writer Arthur Conan Doyle, but he was adapted to DC Comics by Dennis O'Neil and E.R. Cruz in Sherlock Holmes #1. (1975)
Multiverse
Earth-19
Batman: Master of the Future
Elseworlds
League of Extraordinary Gentlemen
Elseworlds
Victorian Undead
Other Media
Arrowverse
Watson analog