John Constantine (also known as Hellblazer) is a fictional character, an antihero, appearing in comic books published by DC Comics. The character first appeared in The Saga of the Swamp Thing No. 37 (June 1985), and was created by Alan Moore, Steve Bissette, and John Totleben. He serves as the lead character of the  comic books Hellblazer (1988–2013), Constantine (2013–2015), and Constantine: The Hellblazer (2015–).