Star character of the Hellblazer series in the Vertigo imprint of DC comics, John Constantine is a British magus and one of the most important and powerful magicians on earth. Very cunning and decietful, his actions are usually selfish and have cost several of his friends thier lives. Has bumped heads with both demonic and angelic forces, not to mention pagan gods and entities. Also a chain smoker.
Not to be confused with his one-dimensional, Americanized and dark haired Keanu Reeves counterpart.
Jo: "Are you Constantine?"
John Constantine: "Yeah."
Jo: "You're a prick."
John Constantine: "Me secret's out then."