In “The Fathers” (#50), while rebuilding Smallville following the events of “K”, Superman and Batman uncover a piece of Kryptonian technology that reveals that Jor-El came in contact withThomas Wayne while searching for an appropriate planet to serve as baby Kal-El’s new home. It is revealed that Jor-El was initially hesitant to send Kal-El to Earth until Thomas Wayne managed to convince him otherwise.
Superman/Batman was a monthly comic book series published by DC Comics that features the publisher’s two most popular characters: Batman and Superman. Superman/Batman premiered in August 2003 and was an update of the previous series, World’s Finest Comics, in which Superman and Batman regularly joined forces.
Superman/Batman explored the camaraderie, antagonism, and friendship between its titular characters. Jeph Loeb, the series’ first writer, introduced a dual-narrator technique to present the characters’ often opposing viewpoints and estimations of each other, which subsequent series writers have maintained. Prior to the 1985 limited series Crisis on Infinite Earths, the two iconic characters were depicted as the best of friends. Frank Miller’s landmark series The Dark Knight Returns was the first DC story that depicts the heroes at odds with each other, as opposed to pre-Crisis incarnations. This dynamic became DC Universe canon with John Byrne’s The Man of Steel, a Superman reboot published in 1986.
Source
