World's Finest 1990 Mini-Series
World's Finest is a three-issue 1990 mini-series by Dave Gibbons, Steve Rude and Karl Kesel. In the series, Superman and Batman battle their arch-enemies Lex Luthor and The Joker, and for that, they temporary exchange their places in their homecities, thus, Superman goes to Gotham City, and Batman goes to Metropolis.
World's Finest Comics was published initially by National Periodical Publications and later by DC Comics beginning in the Summer of 1941 until January of 1986 spanning a total of 322 issues. The series was intially entitled World's Best Comics, but changed to World's Finest after issue #1. The series chronicled the team-up adventures of the Golden (and later Silver Age) Batman and Superman. Unlike their Post-Crisis counterparts, the early versions of these characters were the greatest of friends and routinely teamed up to battle the likes of villains such as Lex Luthor, Brainiac and the Joker. Although not considered an official part of the World's Finest team, the Golden Age Robin assisted them in many of their adventures.