Batman
The first Batman story, "The Case of the Chemical Syndicate", was published in "Detective Comics" #27 (May 1939). Finger said, "Batman was originally written in the style of the pulps", and this influence was evident with Batman showing little remorse over killing or maiming criminals. Batman proved a hit character, and he received his own solo title in 1940 while continuing to star in "Detective Comics". By that time, Detective Comics was the top-selling and most influential publisher in the industry; Batman and the company's other major hero, Superman, were the cornerstones of the company's success. The two characters were featured side-by-side as the stars of "World's Finest Comics", which was originally titled "World's Best Comics" when it debuted in fall 1940. Creators including Jerry Robinson and Dick Sprang also worked on the strips during this period.
James Gordon (comics)
James "Jim" Gordon 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.