Created by Alan Moore, John Constantine, a roguish magician/detective/conman, first appeared during the author’s run on “Swamp Thing” in 1985, receiving his own series, “Hellblazer,” under DC’s Vertigo imprint in 1988. That book ran for 300 issues before it was relaunched in DC’s “New 52” continuity as “Constantine” with a younger take on the…
