The character of John Constantine is taken from the DC Vertigo Hellblazer series of comics and first appeared in 1985, gracing the pages of the Saga of Swamp Thing by Alan Moore (he does get around). Born with a gift he didn’t want, the ability to clearly recognise the half-breed angels and demons that walk amongst us unsuspecting mortals disguised in human skin, Constantine was driven to take his own life to escape the torment that this ability caused him. But he failed. Resuscitated against his will, he found himself back in the land of the living, condemned due to his attempted suicide to patrol the borders of heaven and hell, using his unique ability to help others.