John Constantine, the main character in Hellblazer, was originally a very minor character in DC Comics' Swamp Thing. Next came his only series, in which this hard-smoking, hard-drinking, all around manipulator walked the thin line of magic between this world and hell. So when Irishman Garth Ennis was asked to write this comic book, he had asked himself, "What could I possibly do to John Constantine that hadn't...
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