Commissioner James "Jim" Gordon is a fictional Batman character who is the police commissioner of Gotham City and is a fellow ally of Batman who gives him all of his missions and criminals to capture or question. In some cases, Gordon doesn't know Batman's identity, in other cases he does. He was created by Bill Finger and Bob Kane as an ally of Batman. He first appeared in "Detective Comics" #27 (May 1939), Batman's first appearance, making him the first Batman supporting character ever to be introduced.