Bob Kane incarnation of Clayface. According to Kane, he drew the Penguin after being inspired by the then advertising mascot of Kool cigarettes — a penguin with a top hat and cane. Finger, however, claimed that he created the villain as a caricature of the aristocratic type, because "stuffy English gentlemen" reminded him of emperor penguins. In 1966, Kane retired from DC Comics, choosing to focus on fine art. As Kane's comic-book work tapered off in the 1960s, he parlayed his Batman status into minor celebrity. He enjoyed a post-comics career in television animation, creating the characters Courageous Cat and Cool McCool,
American comic book tropes North America. There are many definitions of a superhero, and the subject is debated by scholars and industry professionals. Peter Coogan identifies influences to comic book superheroes in the form of super-strong comic strip characters, pulp heroes, masked vigilantes dubbed "mystery men", and precursors, who lack specific elements of modern superhero convention. According to Coogan, Superman is the first character to bring together all of the necessary elements. Coogan defines the superhero as "a heroic character with a selfless, pro-social mission" who has powers, a codename, colorful costume, and usually a secret identity. American comic books can be sold through