John Constantine is a fictional character.
Alan Moore ( [ mɔər ] born 18 November 1953 ) is an English writer primarily known for his work in comic books including Watchmen , V for Vendetta and From Hell . An antihero , or antiheroine , is a protagonist who lacks conventional heroic qualities such as idealism , courage , or morality . John Constantine ( [ ˈkɒnstəntaɪn ] ) is a fictional antihero , appearing in comic books published by DC Comics and the DC Comics imprint Vertigo . 2 No. 25 ( June 1984 ) , and was created by Alan Moore , Steve Bissette and John Totleben .