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.
Wonder Woman was taken to Zamaron where the Star Sapphires informed her that a Dark God had taken hold there, too. Diana fought the newly-emerged Karnell, Dark God of Love, who informed Diana that he and his brethren had come from the Dark Multiverse, which the Justice League had recently encountered. When Diana wore the Tenth Metal during the climax of the Justice League's battle with Barbatos, Diana had wished for the gods' return. Though she had meant the Gods of Olympus, the Dark Multiverse's gods were chosen instead, and thus she had unintentionally caused their invasion. Together with the Star Sapphire Corps, Wonder Woman was able to defeat Karnell, who retreated back to Earth. Wonder Woman left the Corps and returned home. In her absence, Jason had united with the Justice League and fought the Dark Gods, who had plunged Earth into chaos. Suddenly, the Dark Gods disappeared, only for them to return with Jason at their side. Jason fought Wonder Woman, but after he led her away from the Dark Gods, he revealed that he was using his armor to channel the power of Dolos, God of Deception, and was in fact deceiving the Dark Gods. Using the wisdom of Athena, Jason developed a plan to convince the Dark Gods to retreat back to their reality. He offered himself, along with the power of the Greek Pantheon, in exchange for the Dark Gods leaving Earth. The Dark Gods accepted the proposal and Diana tearfully said goodbye to her brother, who was taken with them to the Dark Multiverse. The planet was saved and its people returned to normal, but Diana was distraught over the loss of her brother.
Shortly after the team assembled, Wonder Woman assisted in helping a newly resurrected Superman regain his memories. With the team now fully assembled, Wonder Woman contributed to the successful offensive against Steppenwolf, forcing the alien invasion into retreat. Afterwards, she began to plan for the Justice League's future alongside Bruce Wayne.
Principal photography on the film began on November 21, 2015, under the working title Nightingale. Among the film sets were Lower Halstow, Kent, and Australia House in England and the Sassi di Matera, Castel del Monte and Camerota in Southern Italy. Matthew Jensen was the director of photography, filming in the United Kingdom, France and Italy. Production in London concluded on March 13, 2016. On March 20, 2016, filming was underway in Italy. In late April, filming took place at the Louvre Museum in Paris, France, where a Wayne Enterprises truck was spotted alongside Gadot. Principal photography finished on May 9, 2016. Patty Jenkins and director of photography Matt Jensen said that the film's look was inspired by painter John Singer Sargent. Reshoots took place in November 2016, while Gadot was five months pregnant. A green cloth was placed over her stomach to edit out her pregnancy during post-production.
The Crime Syndicate imprisoned the Justice Leagues inside the Firestorm Matrix which psychologically placed them in situations that depicted their greatest failures. Wonder Woman was placed in a situation where she was forced to do battle against both Amazons and humans for the lives of Superman and Steve Trevor. Martian Manhunter and Stargirl attempted to break her out but Wonder Woman ignored them.
The success of the superhero television series Supergirl informed the marketing and promotion strategy used for Wonder Woman. According to Time Warner chief marketing officer Kristen O'Hara, they wanted to approach the Wonder Woman marketing campaign in a light manner, similar to how they did with Supergirl. O'Hara elaborated that the modest campaign route they took for Supergirl aided in establishing a large central fanbase among women well in advance of the series, which reportedly generated 5 million female superhero fans in one week. They were then able to model over time, and grow that audience leading up to the 15-months-later release of Wonder Woman. Though neither the film nor the series are aimed exclusively at women, the latter's campaign gave them their first opportunity to begin collecting data about female superhero fans. In May 2017, a promo for Wonder Woman was released during the season finale of Supergirl, featuring a remix of the song "These Boots Are Made for Walkin'" and Supergirl (Melissa Benoist) wearing Wonder Woman's boots. The promo included an appearance by Lynda Carter, star of the 1970s Wonder Woman, who plays the American president on Supergirl.
Aegeus Angle Man Ares/Mars Baron Blitzkrieg Baroness Paula von Gunther Blue Snowman Veronica Cale Captain Wonder Cheetah Circe Dark Angel Decay Doctor Cyber Doctor Poison Doctor Psycho Duke of Deception Earl of Greed Egg Fu/Chang Tzu Eviless First Born Genocide Giganta Grail Hades Hypnota Kung Lord Conquest/Count of Conquest Mask Medusa Minister Blizzard Osira Queen Clea Red Panzer Silver Swan Tezcatlipoca Zara
The Diana Prince alias also played an important role after the events of Infinite Crisis. Wonder Woman was broadcast worldwide killing a villain named Maxwell Lord, as he was mind controlling Superman into killing Batman. When Wonder Woman caught him in her lasso, demanding to know how to stop Superman, Maxwell revealed that the only way to stop him was to kill Lord, so as a last resort Diana snapped his neck. To recover from the trauma of killing another person, the Amazon went into a self-imposed exile for one year. On her return to public life, Diana realized that her life as a full-time celebrity superhero and ambassador had kept her removed from humanity. Because of this she assumed the persona of Diana Prince and became an agent at the Department of Metahuman Affairs. During a later battle with the witch Circe, a spell was placed on Diana leaving her powerless when not in the guise of Wonder Woman.