DC Comics, Inc. is an American comic book publisher. It is the publishing unit of DC Entertainment, a subsidiary of Warner Bros. since 1967. DC Comics 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, Green Lantern, the Flash, Aquaman, Martian Manhunter, Shazam, Green Arrow, Black Canary, Cyborg, Robin/Nightwing, Batgirl, Supergirl, the Atom and Blue Beetle.