Hellblazer, also known as John Constantine, Hellblazer, is an American comic book series starring John Constantine. The character, created by Alan Moore, Stephen R. Bissette, and John Totleben first appeared in Swamp Thing (vol. 2) #37 (June 1985) as a supporting character, and later appeared as the protagonist of his own series in 1988. In 1993, the series started being published under DC's newly founded imprint Vertigo, and by its cancellation it was the imprint's longest-running series.