John Constantine is a fictional character.
Hellblazer ( also known as John Constantine , Hellblazer ) is an American contemporary horror comic book series , originally published by DC Comics , and subsequently by the Vertigo imprint since March 1993 when the imprint was introduced . Its central character is the streetwise magician John Constantine , who was created by Alan Moore and Stephen R. Bissette , and first appeared as a supporting character in The Saga of the Swamp Thing # 37 ( June 1985 ) , during that creative team 's run on that title . John Constantine . The titular Hellblazer , Constantine is a working class occult detective and con man stationed in London . Protagonist . The word protagonist is used notably in stories and forms of literature and culture that contain stories , which would include dramas , novels , operas and films .