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.
The Shadow
During the mid-1970s, DC Comics published an "atmospheric interpretation" of the character by writer Dennis O'Neil and artist Michael Kaluta in a 12-issue series (Nov. 1973 – Sept. 1975). Kaluta drew issues 1–4 and 6 and was followed by Frank Robbins and then E. R. Cruz. Attempting to be faithful to both the pulp-magazine and radio-drama character, the series guest-starred fellow pulp fiction hero the Avenger in issue #11. The Shadow also appeared in DC's "Batman" #253 (Nov. 1973), in which Batman teams with an aging Shadow and calls the famous crime fighter his "biggest inspiration". In "Batman" #259 (Dec. 1974), Batman again meets The Shadow, and we learn The Shadow saved Bruce Wayne's life when the future Batman was a boy and that The Shadow knows Batman's secret identity (he assures Batman, however, that his secret is safe with him).