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, The Spectre, The Atom, Aquaman, Hawkman, Martian Manhunter, Supergirl, Nightwing, Green Arrow, Static, Starfire, Black Canary, Zatanna and Cyborg.