A stand-alone #0 Issue was released in September which explored Diana's childhood and her tutelage under Ares, the God of War. The issue was narrated in the style of a typical Golden Age comic book and saw Diana in her childhood years. The main plot of the issue was Diana training under Ares as he thought of her being an extraordinary girl with immense potential. The issue ultimately concluded with Diana learning and experiencing the importance of mercy, as she hesitates and refuses to kill the Minotaur- a task given to her by Ares; however, this show of mercy makes her a failure in Ares' eyes.
As her injuries healed, Wonder Woman and her friends spent some time on New Genesis. She spoke to Highfather, who agreed to let her return to Earth. As soon as Diana and her friends returned to Earth, Orion decided to go with them. Arriving to London, they realized the First Born had wrecked the entire city and killed Lennox. The First Born summoned an army of hyena men to kill the intruders but Ares arrived to help Wonder Woman in the fight.
The New 52 universe does not have a "Diana Prince" identity as stated in an interview by series writer Brian Azzarello. However, when she and Superman began dating, for her civilian identity she used the Diana Prince alias whenever she was around Clark Kent; such as when she introduced herself to Lois Lane at Lois's housewarming party under that name.
Perhaps due to her Amazonian background, Diana greatly respects other noble selfless warriors, as evidenced when she attended Superman's funeral in Smallville and spoke of how he had been much more than a soldier (adding to what Batman said about Metropolis burying an empty casket). As a result of her great posthumous respect, she was, therefore, more than willing to aid Batman in honoring the heroic death of Superman, by helping round up the metahumans from Lex Luthor's files to form a team of superheroes (later known as the Justice League) to protect the world from the imminent mysterious alien invader Steppenwolf and his Parademon minions after Superman's death left the world vulnerable.
During Marston's run, Diana Prince was the name of an army nurse whom Wonder Woman met. The nurse wanted to meet with her fiancé, who was transferred to South America, but was unable to arrange for money to do so. As Wonder Woman needed a secret identity to look after Steve (who was admitted to the same army hospital in which Diana Prince worked), and because both of them looked alike, Wonder Woman gave the nurse money to go to her fiancé in exchange for the nurse's credentials and took Diana Prince as her alias. She started to work as an army nurse and later as an Air Force secretary.
Nick Pumphrey stated that Wonder Woman stands as a non-violent beacon of hope and inspiration for women and men. Grant Morrison stated "I sat down and I thought, 'I don't want to do this warrior woman thing.' I can understand why they're doing it, I get all that, but that's not what [Wonder Woman creator] William Marston wanted, that's not what he wanted at all! His original concept for Wonder Woman was an answer to comics that he thought were filled with images of blood-curdling masculinity, and you see the latest shots of Gal Gadot in the costume, and it's all sword and shield and her snarling at the camera. Marston's Diana was a doctor, a healer, a scientist."
Wonder Woman's origin story relates that she was sculpted from clay by her mother Queen Hippolyta and was given a life to live as an Amazon, along with superhuman powers as gifts by the Greek gods. In recent years, DC changed her background with the retcon that she is the daughter of Zeus and Hippolyta, jointly raised by her mother and her aunts Antiope and Menalippe. The character has changed in depiction over the decades, including briefly losing her powers entirely in the late 1960s; by the 1980s, artist George Perez gave her an atheltic look and emphasized her Amazonian heritage. She possesses an arsenal of advanced technology, including the Lasso of Truth, a pair of indestructible bracelets, a tiara which serves as a projectile, and, in older stories, a range of devices based on Amazon technology.
Wonder Woman and the other heroes were finally released from the Firestorm Matrix when Batman used the Lasso of Truth on Firestorm. Superman was still infected with the Kryptonite shard inside his nervous system, but Lex Luthor was able to extract it, saving Superman's life. Luthor also assembled a group of villains that defeated the Crime Syndicate. Later, at the Batcave, Wonder Woman and the Justice League talked about the enemy that destroyed the Crime Syndicate's world and came to the conclusion that Darkseid would return.