High Quality Content by WIKIPEDIA articles! Hellblazer (also known as John Constantine, Hellblazer) is a contemporary horror comic book series, originally published by DC Comics, and subsequently by the Vertigo imprint since March 1993, the month the imprint was introduced, where it remains to this day. Its central character is the streetwise magician John Constantine, following his popularity in the Alan Moore run on Swamp Thing. It has been published continuously since January 1988, and is Vertigo`s longest running title, the only remaining publication from the imprint`s launch.