Constantine is based on DC Comics' Hellblazer comic book.
Constantine (comic book) . It follows the story of a British magician , John Constantine , and replaces the former Vertigo Comics title Hellblazer , which ended with its 300th issue after 25 years , in February 2013 . Constantine (film) . With a screenplay by Kevin Brodbin and Frank Cappello , the film is based on DC Comics ' Hellblazer comic book , with plot elements taken from the `` Dangerous Habits '' story arc ( issues # 4146 ) and the `` Original Sins '' story arc .