Blood of the Demon, plotted and drawn by John Byrne and scripted by Will Pfeifer, was a 17-issue comic book series published by DC Comics from May 2005 to September 2006. The title character named Etrigan, created by prolific comic book writer-artist Jack Kirby, is an actual demon from Hell who, despite his violent tendencies, usually finds himself allied to the forces of good, mainly because of the alliance between the heroic characters of the DC Universe and Jason Blood, a human to which Etrigan is bound. While his first monthly comic book series was short-lived (The Demon, 16 issues, 1972-74), and his second was canceled after five years (The Demon, 59 issues + 2 Annuals, 1990-1995), Etrigan remains a popular supporting character with occasional additional mini-series. In Blood of the Demon (thus far his latest title series) Etrigan apparently loses the restrictions imposed upon him by the wizard Merlin which turned him from evil, caused by his "murder" at the exact moment he was transforming from his human guise Jason Blood into his demon self. It turns out that the incident has resulted in Jason Blood being able to exert some will over Etrigan's violent nature, whereas previously the two remained separate, only one existing at a time.