When did Jim Gordon first appear?
James Gordon (comics)
May 1939
James "Jim" Gordon[1] is a fictional character appearing in American comic books published by DC Comics, most commonly in association with the superhero Batman. The character debuted in the first panel of Detective Comics #27 (May 1939), Batman's first appearance, where he is referred to simply as Commissioner Gordon. The character was created by Bill Finger and Bob Kane. Commissioner Gordon made his debut as an ally of Batman, making him the first Batman supporting character ever to be introduced.[2]