Earth-731

Earth-731 is a universe that contains elements of the TV shows Arrow, The Flash and Smallville, with a history somewhat similar, but noticeably different from the worlds the aforementioned shows take place in. It is the home of Kryptonian hero Clark Kent/Superman, speedster hero, Barry Allen/The Flash, two billionaires-turned-emerald vigilante archers Connor Hawke, Sr./Green Arrow and Oliver Queen/The Arrow, and CEO billionaire Lex Luthor.