DC Comics, Inc. is an American comic book publisher. It is the publishing unit of DC Entertainment, a subsidiary of Warner Bros. Global Brands and Experiences. DC Comics is one of the largest and oldest American comic book companies. The majority of its publications take place within the fictional DC Universe and feature numerous culturally iconic heroic characters, most notably Superman, Batman and Wonder Woman, among many others. The universe also features well-known supervillains such as Lex Luthor, the Joker, Catwoman, and the Penguin. The company has published non-DC Universe-related material, including Watchmen, V for Vendetta, and many titles under their alternative imprint Vertigo.