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.
Neal Adams
During this period near the end of the industry revival historians call the Silver Age of comic books, Adams was soon assigned his first superhero covers, illustrating that of the Superman flagship "Action Comics" #356 (Nov. 1967) and the same month's "Superman's Girl Friend, Lois Lane" #79 (Nov. 1967), featuring Superman and a mysterious new costumed character, Titanman. Also that month, Adams drew his first superhero story, teaming with writer Gardner Fox on the lighthearted backup feature "The Elongated Man" in "Detective Comics" #369, the flagship Batman title. Shortly afterward, he drew Batman himself, along with the supernatural superhero the Spectre, on the cover of "The Brave and the Bold" #75 (Jan. 1968) – the first published instance of Adams' work on what would become two of his signature comics characters. The first instance of Adams drawing Batman in an interior story was "The Superman-Batman Revenge Squads" in "World's Finest Comics" #175 (May 1968).