DC Comics, Inc. is an American comic book publisher based in Burbank, California. It was founded (as National Allied Publications) in 1934 by Malcolm Wheeler-Nicholson. It is one of the largest and oldest American comic book companies, and produces material featuring numerous culturally iconic heroic characters, including Superman, Batman, Wonder Woman, The Flash, Green Lantern, Martian Manhunter, Nightwing, Green Arrow, Aquaman, Hawkman, Cyborg and Supergirl. In association with Dark Horse Comics, DC has published several Aliens, Predator and Aliens vs. Predator crossover comics.