The New 52
In The New 52, Constantine appears as one of the lead characters in Justice League Dark. His history is slightly altered, such as meeting Zatanna in New York instead of San Francisco, and the origins of how he got his trademark trenchcoat. During the gap where he travels the world to learn magic, the New 52 added the history of him meeting Nick Necro, who was implied to be John's mentor and original owner of the trenchcoat. The Forever Evil: Blight storyline would establish that the three characters were all involved in a magical pact and a love triangle, which fell apart due to Zatanna ending her relationship with Nick to pursue John. Nick states "We were all in love, and you two shut me out!" The character also stars in the ongoing series Constantine, which replaces Hellblazer. He is still an unsavory trickster in the New 52 universe, as, while during the Trinity War between the three Justice Leagues, he tries to trick Shazam (15-year-old Billy Batson) so that he can steal his magic. He fails, causing Billy to become even more distrustful of other people than he already was.
In Constantine #14, it was revealed that John Constantine, as a boy, was taught and cast his first magical spell—at the cost of the lives of his parents and his house burning down (it was implied that his mother, unlike in Hellblazer, survived the childbirth). It was also revealed that he spent his childhood in the '80s in Liverpool, England (it is not shown if he had any siblings, like Cheryl Constantine in Hellblazer). The one who taught John his first spell was Tannarak from the Cult of the Cold Flame (Constantine #15).
His primary enemies in Constantine are Mister E, Sargon the Sorceress (the original Sargon's daughter), and Tannarak: all are members of the Cult of the Cold Flame. Together with his allies Papa Midnite, the psychic mage Spellbinder, and witch Julia Everheart, Constantine attempts to destroy the Cult by conspiring a scam to take Sargon and Tannarak by surprise. However, prior to the planned battle, Constantine is thrown into the battlefield in Dar es Salaam in World War I because of a ritual going wrong, making his plan fail. An encounter with Doctor Occult there results in Constantine being transported to Earth-2—a world under siege from Darkseid and his Parademons.
In Earth-2, he is assaulted by the Parademons, but Wotan comes and rescues him, before trapping him to open a gateway to escape the dying Earth. Constantine manages to convince Wotan to spare his life, then works with the ancient sorcerer to open a door through his body to Earth-0. As Wotan enters the doorway, he is split into two halves, because there are two John Constantines in this world: the original Constantine and the native one of Earth-2, who is surrounded by his friends and even gets married. After the death of Wotan, Constantine resolves to find his Earth-2 counterpart. He travels to Liverpool and witnesses all the horror and despair of the dying world. As soon as John reached the destination, he is shocked to find his "parents" (actually the Earth-2 John's parents), his friends Gary Lester, Chas Chandler and his former love interest Maureen still alive.
The Earth-2 John quickly attacks him by grabbing him in the neck, but they are engulfed in visions of their lives in parallel right after: a dangerous life marred with sorcery, adventures and regrets of Earth-0 John and a much quieter, much happier life of Earth-2 John. Constantine quickly earns the trust of the Earth-2 family, who consider him to be a wonder. Together, they escape to a warehouse where John instructs them to draw sigils to cast a complex spell. As John is lecturing about the unpredictability and the price of magic, Doctor Fate appears, claims to have foreseen his arrival, and offers to help him.
Doctor Fate reminds John of an incoming horde of Parademons and tells him to quickly cast the spell to escape from the dying world, himself hoping to flee with John and the family too. John discovers that the spell requires one Constantine to die: either himself or the Earth-2 John. As the Parademons storm in and take each family member down one by one, John is torn over between saving his own life and let the good, honest Earth-2 John live by sacrificing himself. Finally, he chooses to save his own skin: as he is kissing the other John, he holds his hand and drives the knife into his heart, killing the "other John". As the spells start working, John casts an additional spell to trick Doctor Fate, which masks his presence from the ancient sorcerer, then departs, brings along the family members and many other people.
By killing the "proper" Constantine, he earns the wrath and hatred of the Earth-2 family. Being called "Devil", John corrects the family when they reach Heaven while peeling through the layers of the dying world: Heaven itself, also under assault from Darkseid's force, has closed its door and started departing, deeming this world beyond salvation. Later, John and his entourage are attacked by Doctor Fate, who managed to detect Constantine's whereabout. Despite succeeding in countering the assault, John loses his "mother" Mary-Anne, who is dragged back by Fate's chain. This greatly traumatizes Thomas Constantine, John's father, who even attempts to commit suicide, but is talked out of it by John.
After a long and hard trip, Constantine finally makes it back home, but Darkseid has sensed him and is in hot pursuit. As the menacing hand of Darkseid is reaching out for him, Constantine enacts his "last trick": by sacrificing some souls of his entourage, John manages to get enough power to cast the "Ring of Dolus" spell, which uses every happy memory, every pleasant thought, every piece of hope in John Constantine to swirl a magical "web" made of lies. This powerful spell helps John project an illusion of an already dead universe to fool Darkseid, while John manages to bring himself, the family and the Earth-2 civilians to safety, and even pickpockets some survivors back from Darkseid's clutch.
As Constantine lands in the Jurassic Coast, England, he is confronted by Thomas, who points a gun at his head. Tired of everything, John yells at his father, and begs him to kill him off for good. Unable to do it, Thomas drops the gun, but Maureen quickly puts it up and prepares to shoot John, while questioning his actions. John contemplates and sees that while he is no hero, he is the only one willing to sacrifice the "proper John" to save his family, or to trade a hundred people for the safety of 6 billion. He magically teleports away, leaving the family and the survivors behind. Later, John goes back to New York and visits his old friend Lloyd at his bar to tell him about his latest adventures.
The New 52 Constantine series ends at issue #23 and was relaunched as Constantine: The Hellblazer written by Ming Doyle and James Tynion IV in June 2015.
The Constantine Futures End tie-in tells the story of John Constantine five years into a possible future of the New 52 universe. He somehow obtains the ultimate occult artifact, the Helmet of Fate, and manages to trick and kill the ancient magician Nabu with the help of an old ifrit.
John Constantine's origin in the New 52 universe is seemingly retconned in the Secret Origins series. In the story, a group of kids in Liverpool manages to get their hands on an occult book and uses it to summon a magical creature called Legendbreaker to discover Constantine's true origin. Instead, the creature tells three conflicting stories: one featuring John's mother dead in childbirth, leaving him to his abusive father; another having John Constantine being born in a loving family with proud and doting parents; and last one with John born in an unremarkable family, but with a mad older sister who may be possessed by a dark force. They all lead to the death of his entire family and set the path for John Constantine into the world of magic and to the fateful incident in Newcastle, although the actions and consequences are different. The creature tries to claim the souls of the young "mystics", but the real John Constantine shows up and chases it away. He tells the kids to go back home, forget what has just happened, and that his true origins will forever remain unknown—but it does not matter.
John Constantine stars in the DC You title Constantine: The Hellblazer written by Ming Doyle and James Tynion IV. The title introduces John in a new outfit and new hairstyle, in his own adventures, unrelated to superheroes business.
Constantine uses magic to trick a cashier in a clothes store and gets himself a new suit. He pickpockets a passenger, uses the money to buy a meal in a small restaurant and gets acquainted with its owner Oliver, a single father of two daughters. As John is busy chatting and flirting with Oliver, an old "friend", the demon Blythe pulls John away. She convinces him to help them solve their problems in their latest business place, a soul farm. They want John to eliminate their business partner, which John completes, and he also cons Blythe into banishing herself back to Hell. Suddenly, John sees his entire ghost entourage, and Gary Lester's ghost—who has tried to warn him since the beginning—tells him that Frank North's spirit has vanished completely, and something has been after John's ghosts. John tries to set up a scheme to lure and trap the entity which had been after his ghosts, by ramping up quite a number of ghosts from 'haunted sites'. The plan fails and Gary Lester's ghost is also taken by the being. After a few flashbacks and meeting with an old acquaintance named Georgie, John begins to unravel the true identity of the ghost-hunting entity, as his (and Georgie's) old time lover, Veronica. After releasing Veronica's soul, Constantine starts to notice (and is also warned by other beings whom he deems as 'friends') the increasing number of supernatural activities in New York city. Being part of Neron's grand scheme, John manages to (after quite a bit of struggle) con Neron into thinking that the souls he had claimed were worthless, and leaving New York city for good. This is at the cost of Oliver's soul, which Blythe had claimed by previously blackmailing him and John with the souls of his daughters.
