Chris Pine was cast as Steve Trevor, a character he described as a "rogue-ish, cynical realist who's seen the awful brutish nature of modern civilization" and added that he is a "worldly guy, a charming guy". He signed a multi-picture deal. Lucy Davis' performance as Etta Candy is the first live-action cinematic portrayal of the character. As well, Elena Anaya's performance as Doctor Poison is the cinematic debut of that character. Nicole Kidman was in negotiations for the role of Queen Hippolyta, but was forced to drop out due to scheduling conflicts with Big Little Lies.
Orion brings them to New Genesis where Diana has learned she has been in a coma for three days.Angered by this, she goes to talk to Highfather but realizes that in doing so, he saved her life. He informs her Orion is meditating in order to control his anger. After a heart to heart talk among each other, Diana finds out that Highfather will allow them to escape, on the condition that they surrender the baby. Diana, disappointed tries to remind Orion what she's done for him. Orion apologizes to Highfather and follows them through the boomtube with Zeke in tow, although Highfather says that their is no need.
In present-day Paris, Diana receives a photographic plate from Wayne Enterprises of herself and four men taken during World War I, prompting her to recall her past. The daughter of Queen Hippolyta, Diana is raised on the hidden island of Themyscira, home to the Amazonian women warriors created by Zeus to protect mankind. Hippolyta explains the Amazonian history to Diana, including how Ares became jealous of humanity and orchestrated its destruction. When the other gods attempted to stop him, Ares killed all but Zeus, who used the last of his power to wound Ares and force his retreat. Before dying, Zeus left the Amazons the island and a weapon, the "Godkiller", to prepare them for Ares's return.
Wonder Woman's powers and traditional costume were restored in issue #204 (January–February 1973). Gloria Steinem, who grew up reading Wonder Woman comics, was a key player in the restoration. Steinem, offended that the most famous female superheroine had been depowered, placed Wonder Woman (in costume) on the cover of the first issue of Ms. (1972) – Warner Communications, DC Comics' owner, was an investor – which also contained an appreciative essay about the character.
Wonder Woman's signature weapon was her Lasso of Truth; consequently, much of her crime-fighting powers came from bondage, and her only exploitable weakness was, essentially, bondage. Grant Morrison and Yanick Paquette had teamed up to work on Wonder Woman: Earth One. Paquette confirmed that he and Morrison would be bringing back the bondage theme that was popular in Wonder Woman comics during the 1940s. However, he stated that Morrison was looking for a way to not only modernize it, but to use the bondage theme as a form of female empowerment. Paquette acknowledged that Wonder Woman has become more than just a beloved character, she is a symbol for feminism. "By bringing in sex and, yes, bondage, it reasserts [William Moulton Marston's core] idea that it is okay for women to have a healthy sexual appetite." Paquette elaborated more on this by pointing out the blatant double standards in comics when it comes to sex: "Could Wonder Woman really ever have a healthy and active sex life without it becoming political fodder for Fox News? And what of women and girls who want to be like her? Do we truly think they wouldn't be labeled sluts? I have my doubts."
Later, Etta was released from hospital and Diana accompanied her to her home. She was shot by a sniper, but deflected the bullet and interrogated the attacker, who called herself Mayfly. She revealed that she had attempted to assassinate Wonder Woman in return for a bounty that had been placed on her. Shortly afterwards, Diana was attacked by five more assassins: Cat Eye, Cheshire, Abolith, Baundo and Plastique, the latter of whom revealed that she had planted the bomb at the wedding. Wonder Woman was able to defeat them all with the help of Etta, and they returned to an A.R.G.U.S. facility. There, Sasha Bordeaux informed her that another scientist, Hamilton Revere, had heard of Dr. Crawford's attempts to harvest Diana's DNA, and had apparently hypothesized that it could be used for the treatment of numerous diseases. Wonder Woman was intrigued and decided to seek out Revere of her own accord and hear out his plans. When she arrived, Revere informed her that in truth, he sought to use her DNA to create an army of super-soldiers. He had also used samples of Diana's blood to grant some of his goons super strength, who attacked her. Etta and Steve Trevor arrived to assist Wonder Woman, and together they bound the attackers in the Lasso of Truth, which once again removed the lie within their bodies. Revere was arrested, and Diana returned home with Steve and Etta.
Indomitable Will: Wonder Woman has tremendous determination and strength of will. She refuses to ever give up, even when placed against seemingly insurmountable odds. Hence, despite the Germans invading Themyscira having far superior firepower, despite the extreme danger of German firepower in-between World War I trenches, despite having to fight the stronger and seemingly unstoppable Doomsday, despite having to battle the mighty Ares right after witnessing Steve Trevor's death, Wonder Woman promptly rose up, overcame her negative emotions, and kept on fighting, persisting until she eventually managed to gain the upper hand. Indeed, her indomitable spirit gave a renewed hope to the Wonder Men and inspired them past the point of purely monetary interests, with Chief resolving to no longer be neutral in the war and believing her story of the Olympians, Sameer finally admitting his passion for acting, and even the depressed Charlie struggling with PTSD finally beginning to sing again for the first time in years. When humanity's inherent potential for evil was revealed to her by Ares, Wonder Woman, while initially taken aback, ultimately rejected the prospect of alliance with Ares against them, even if that were to mean missing out on "paradise" on Earth, and instead courageously confronted him as the god killer. When seemingly beaten by Ares (who was only growing more powerful from her violence, rage, and hatred) and overcome by the weight of his words and the devastation of Steve's death, Wonder Woman recalled his great love for and undying belief in her, and was thereby able to muster enough willpower and love to overcome her violent emotions and defeat Ares. While mostly stepping away from superheroism for 100 years (emotionally crippled at her inability to save the Belgian villagers and Steve, and by seeing the ensuing "century of horrors"), Wonder Woman didn't entirely lose hope, and it was fully reignited again when she witnessed the self-sacrificing death of another selfless superhero, Superman (who combined the phenomenal godly might of Ares with the self-sacrificing morality of Steve Trevor), giving her enough faith to help Batman found the Justice League. During the League's battle against Steppenwolf's forces, Wonder Woman was able to inspire confidence into the inexperienced Flash and Cyborg, assuring them that they wouldn't need to fight the Apokoliptan invasion alone.
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.