Hellblazer is a long-running American comic book series published by DC Comics under its Vertigo imprint. The series debuted in January 1988, emerging from the pages of the horror title 'The Swamp Thing', where the character of John Constantine was originally created by writer Alan Moore and artists Steve Bissette and John Totleben. The solo series was initially written by Jamie Delano, who established the character's gritty, politically charged world.\n\nThe comic follows John Constantine, a working-class magician, occult detective, and con man from Liverpool, England. Unlike traditional superheroes, Constantine relies on his wit, cunning, and extensive knowledge of the occult to navigate a world filled with demons, angels, and other supernatural entities. The stories are known for their mature themes, blending horror, dark fantasy, and social commentary.\n\n'Hellblazer' became the flagship title of DC's Vertigo line, known for its sophisticated storytelling aimed at adult readers. Over its 300-issue run, the series attracted numerous acclaimed writers, including Garth Ennis, Warren Ellis, Brian Azzarello, and Peter Milligan, each leaving their distinct mark on the character. It remains one of the most influential and critically acclaimed horror comics ever published.