When Hippolyta and the other Amazons were trapped in a demonic dimension, she started receiving visions about the death of Wonder Woman. Fearing her daughter's death, Hippolyta created a false claim that Diana was not worthy of continuing her role as Wonder Woman, and arranged for a contest to determine who would be the new Wonder Woman, thus protecting Diana from her supposed fate. The participants of the final round were Diana and Artemis, and with the help of some mystic manipulation by Hippolyta, Artemis won the contest. Thus, Diana was forced to hand over her title and costume to Artemis, who became the new Wonder Woman and Diana started fighting crime in an alternate costume. Artemis later died in battle with the White Magician – thus, Hippolyta's vision of a dying Wonder Woman did come true, albeit not of Diana as Wonder Woman. Diana once again became Wonder Woman, a request made by Artemis in her last seconds. Artemis would later return as Requiem. Prior to Artemis' death, Hippolyta would admit to her daughter about her own part in Artemis' death, which strained their relationship as Diana was unable to forgive her mother for sending another Amazon to her death knowingly for the sake of saving her own daughter.
The Invisible Plane was a creation of Diana's during her younger years on Paradise Island. She created it to be an improvement on her mother's planes which would be shot down in Man's World. The result of her innovation was an invisible plane that could fly at terrific speeds silently and not be detected by hostile forces. Initially, it was portrayed as being transparent.
“Noted Psychologist Revealed as Author of Best-Selling ‘Wonder Woman,’” read the astonishing headline. In the summer of 1942, a press release from the New York offices of All-American Comics turned up at newspapers, magazines and radio stations all over the United States. The identity of Wonder Woman’s creator had been “at first kept secret,” it said, but the time had come to make a shocking announcement: “the author of ‘Wonder Woman’ is Dr. William Moulton Marston, internationally famous psychologist.” The truth about Wonder Woman had come out at last.
Wonder Woman was soon faced with a new threat. Some years ago, Diana saved a young girl, Vanessa Kapatelis, from death at the hands of Major Disaster. She continued to visit Vanessa for many years as she recovered from her injuries, and encouraged her to undergo experimental treatment involving nanites, which allowed Vanessa to walk again. Eventually, Wonder Woman's superheroics forced her to cease her visits. During Diana's absence, Vanessa's mother Julia died, and Vanessa was left alone and felt that Diana had abandoned her. She began to resent Wonder Woman and declared herself her enemy, using the nanites in her blood to create a metallic, winged suit of armor and adopting the name Silver Swan. Silver Swan murdered a family of people that Diana had recently saved, causing Wonder Woman to fight her alongside Jason. Diana managed to drown Silver Swan until she lost consciousness, causing her to revert to her human form. She left Vanessa to recover in the care of A.R.G.U.S.
A warning that is first heard from the lips of Cheetah as she attempts to escape captivity, yet is echoed by others around the globe, all putting Wonder Woman on alert. As she attempts to investigate, she is attacked by Supergirl, wanting vengeance for the death of Rao, as the influence has gotten to her as well. An epic battle breaks out, and once again, the trusty Lasso of Truth saves the day, though barely.
After taking on the mantle God of War after killing her mentor War. Diana have shown some new abilities. She can now telepathically communicate and control all soldiers on the planet since she is their greatest leader. She hasn't shown the ability, but as her predecessor was able to bring back dead soldiers to fight alongside him, she might be able to do so as well.
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.
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.