John Constantine is bisexual, throughout his life he has been involved with women and sometimes men. Resurrection — In the graphic novel Pandemonium, he once allowed himself to be killed, but later resurrects himself by exiting the afterlife. Astral Projection — Constantine once separated his soul from his body to travel through psyches and dimensions. ( Hellblazer: Joyride)

Constantine's creator, Alan Moore, believes that he has met John Constantine in real life. In 1993, he told Wizard Magazine: Constantine languished in development hell at Warner Bros in the late ’90s. But the project had staying power, and after years of struggling and evolving, Keanu Reeves signed on to star in the film for music video director Francis Lawrence, who would make his feature debut. With Constantine, Lawrence and his collaborators constructed a rich, textured world, one whose inner workings are intimately familiar to our protagonist, though he doesn’t always feel like explaining them. (“Cats are good. Half in half out, anyway.”) Here, the supernatural is quotidian — performing an exorcism is “like changing your oil,” Reeves told the Associated Press at the time of release. There have been no mentioned birthday celebrations since then, but nothing in the comics has stated a retcon of Constantine's age or the real time development of his comic. In Hellblazer issue 236, an acquaintance of Constantine's comments that he doesn't look his age (which was then just over 50). Constantine attributes this to demon blood in his veins. In versions of Constatine where the audience are young his trademark cigarettes is replaced by lollipops. He is also one of the strongest characters in the DC universe with abilities like immunity from angelic magic, powerful healing and supreme close-quarter combat skills.On the surface, Constantine may seem to be the last character suitable to receive a YA title, given he started life as a flagship character in DC’s mature-readers Vertigo imprint. Yet this is actually John Constantine’s second appearance in the line, after last year’s Johnny Constantine and the Mystery of the Meanest Teacher, which was aimed at middle-school readers. Kami Garcia, who has written other DC YA graphic novels, joins forces with artist Issac Goodhart, colorist Ruth Redmond and letterer Steve Wands to tell a story of Constantine at the end of his adolescent years, where he must balance magic and fighting demons against the pressures of being a teenager. Angela Dodson (Rachel Weisz) is the only newcomer to Constantine’s inner circle. They’re brought together by death: Constantine’s terminal diagnosis and the death of Angela’s twin sister Isabel by suicide. Just as Angela helps facilitate Constantine’s arc from selfish to selfless, Constantine is the catalyst for Angela’s evolution. Lawrence choreographed it so that their movement in the frame — Angela from right to left, Constantine from left to right — creates the sense they’re “always heading toward one another,” on a collision course, fated to meet. Regular kismet. Constantine survives, no longer damned or dying of cancer. He replaces cigarettes with nicotine gum. Keanu Reeves reportedly wrote Constantine’s last line, one that sums up his journey tidily: “I guess there’s a plan for all of us. I had to die — twice — just to figure that out. Like the book says, He works His work in mysterious ways. Some people like it, some people don’t.” Constantine using an offensive spell "Fiat Bloody Lux" to fight off two demons Some examples of Constantine's magic:

In 1988, Constantine was given his own title, Hellblazer, published by DC Comics. In 1993, at the launch of DC's Vertigo Comics imprint, Hellblazer was made an official Vertigo publication. It ran until 2013, and was the longest-running continuously published Vertigo title. I haven't read the comics so I didn't really have any expectations when I saw the film. I have heard that the avid fans of the comic books complained that Keanu Reeves doesn't fit the role. That might be true but to me he really didn't seem that bad. He still has a very clear well defined body language which I feel makes up for his monotonous voice (at least to some degree). I went in to the cinema and saw the film with an open mind which is what I advise future viewers to do and not rely too heavily on what the critics say. For information on Constantine's life in the main Hellblazer series, see John Constantine biography.

He’s still ambivalent, still Constantine, but maybe he’s cast aside a little bit of his nihilism, gained some peace, understood his own significance. In the end, he finds a place among the people he’s fought so long to protect. John Constantine saves the world, and he saves himself. Endurance: Another one of his greatest asset aside from his intellect, Constantine can survive through numerous bodily harm, excruciating pain, and can even walk out after torture.