Diana quickly regained her sanity and was taken out of the mental hospital's care. She immediately noted the absence of Barbara and set out to locate her. However, when she arrived at Empire Enterprises, she was greeted only by Doctor Cyber. Cale set Team Poison onto Wonder Woman once again, and Colonel Poison managed to shoot Diana through the chest. Diana and Steve quickly overcame their forces and followed Veronica Cale and Cheetah to a gateway that led to Themyscira. Wonder Woman and Cheetah fought, and a drop of Diana's blood fell onto the gateway which opened the portal to Ares' prison beneath Themyscira. Phobos and Deimos, whom Cale had turned into dogs with the help of Circe, entered the portal, along with Diana and Veronica Cale. Veronica found her daughter beside Ares.
Diana then arrives to stop Ares, and brings Steve Trevor to the US.Arriving in Boston, she meets Professor Julia Kapatelis. After fighting a monster named Decay sent by Phobos, a son of Ares, Diana, Julia and Steve discover Ares' plan: to start a nuclear war worldwide. Joined by Steve's friend Michaelis, the group travel to the military bases Ares' minions had taken control of and avert nuclear war. Ares
While living in "Man's World" for a century following World War I tempered some of Diana's more blindly held beliefs, she still held true to her core values of kindness and compassion, and further grew into an exceptionally considerate, diplomatic, and empathetic woman. This can be seen when she silently emphasizes with Lois Lane after the death of Superman had been killed (recalling her own pain after Steve Trevor's sacrifice), smiling knowingly when Aquaman accidentally sat on the Lasso of Hestia and confessed his fears about their upcoming mission and how attractive he found her. With all of her experiences, Diana is also the most diplomatic member of the Justice League, as evidenced by her treatment of the Flash with compassion and patience, despite his tendency to somewhat annoy her and the other Justice Leaguers with his humorous attitude, and the kindness and support she showed to Cyborg while he continued to grapple with his powers. Indeed, through her compassion and unbreakable spirit, Diana has given renewed hope to many of her teammates throughout the years. For example, she motivated and inspired the Wonder Men into looking past purely monetary interests, with Chief resolving to no longer be neutral in the war, 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. Likewise, during the Justice League's battle against Steppenwolf's forces, Wonder Woman was able to inspire confidence in the inexperienced Flash and Cyborg, assuring them that they wouldn't need to fight the Apokoliptan invasion alone. Furthermore, she was the most understanding of Superman's confusion upon his ressurrection and remained ambivalent about fighting the newly-resurrected Superman and even implored him not to force her to, showing him compassion and persistence while attempting to get him to remember who he is (even calling him by his birth name). In addition to her general willingness for empathy, however, Diana is also extremely friendly and can step back enjoy the smaller moments in life, as seen in her utter delight in experiencing ice cream and agreement with Superman (who, up until this point she had not spoken to much) about him not missing out on the positive results of their victory over Steppenwolf.
In an October 25, 1940, interview with the Family Circle magazine, William Moulton Marston discussed the unfulfilled potential of the comic book medium. This article caught the attention of comics publisher Max Gaines, who hired Marston as an educational consultant for National Periodicals and All-American Publications, two of the companies that would merge to form DC Comics. At that time, Marston wanted to create his own new superhero; Marston's wife and fellow psychologist Elizabeth suggested to him that it should be a woman:
In London, they deliver Maru's notebook to the Supreme War Council, where Sir Patrick Morgan is trying to negotiate an armistice with Germany. Diana translates Maru's notes and reveals that the Germans plan to release the deadly gas at the Western Front. Although forbidden by his commander to act, Steve, with secret funding from Morgan, recruits spy Sameer, marksman Charlie, and smuggler Chief Napi to help prevent the gas from being released. The team reaches the front in Belgium. Diana goes alone through No Man's Land and captures the enemy trench, allowing the Allied forces to help her liberate the village of Veld. The team briefly celebrates, taking a photograph in the village, while Diana and Steve begin to develop their own romance.
Wonder Woman experienced significant changes from the late 1950s through the 1960s during the Silver Age of Comic Books. Harry G. Peter was replaced by Ross Andru and Mike Esposito in issue #98 (May 1958), and the character was revamped as were other characters in the Silver Age. In Diana's new origin story (issue #105), it is revealed that her powers are gifts from the gods. Receiving the blessing of each deity in her crib, Diana is destined to become as "beautiful as Aphrodite, wise as Athena, stronger than Hercules, and swifter than Mercury". Further changes included the removal of all World War II references from Wonder Woman's origin, the changing of Hippolyta's hair color to blonde, Wonder Woman's new ability to glide on air currents, and the introduction of the rule that Paradise Island would be destroyed if a man ever set foot on it.
A shocked Diana apologized to Antiope and abruptly left the training session. She wandered off to a cliff on the Themysciran seashore and examined her gauntlets in awe. As she stood there, she noticed an airplane burst through the forcefield surrounding Themyscira and crash in the nearby waters. Seeing even from a great distance away that someone was trapped inside the sinking aircraft, she leaped down the ocean and rescued the pilot, none other than a human soldier named Steve Trevor. She pulled him out of the water and onto the Themysciran shore. As he came to, she noted in disbelief that he was a man, as she had never seen one before. Though somewhat confused, Steve affirmed that he was, rhetorically asking whether or not he looked like one.
Despite helping win the war, defeating Ares and still loving humanity, Diana is still left sobered, emotionally broken, psychologically scarred, and devastated over not having been able to save the Belgian village from Dr. Poison, as well as over her beloved Steve Trevor's self-sacrificing death. Indeed, Diana would later claim that she "would never be the same" ever again after World War I. Moreover, in the years that followed, Diana bore witness to a "century of horrors" (Wars, Fascism, Communism, nuclear weapons' deployment, geopolitical brinkmanship, racism, homophobia, genocides, war crimes, propaganda, and etc.), and due to all of this occurring without Ares being there to spread corruption, Diana almost completely lost faith in humanity, coming to believe that humans "made a world where standing together is impossible". As such, Diana resolved to mostly abandon superheroism for 100 years.
Upon arriving, Diana and Hermes found themselves under attack by Hades' minions. Though they fought them off, they were surprised to find that time for Zola had passed much more quickly than for them. Her pregnancy was nearly at the end of its term. When they attempted to leave with her, Hades appeared, warning that one of them must stay behind - and if Diana was unprepared to make Hera his wife as promised - she would do. However, upon Eros' pistols, he instead agreed to let them all go in exchange for them. When Diana's back was turned, he fired them at her, and she fell under love's spell to him.
Wonder Woman was now a princess and emissary from Paradise Island (called Themyscira) to Patriarch's world. She possessed stunning beauty and a loving heart, gifts from the goddess Aphrodite. From Athena, she received the gift of great wisdom; from Demeter, the power and strength of the earth; from Hestia, sisterhood with fire; and from Artemis, unity with beasts and the instincts and prowess of a hunter. Finally, Diana received the gift of speed and the power of flight from the god Hermes.
The Greek messenger god, Hermes, entrusts Wonder Woman with the protection of Zola, a young woman, who is pregnant with Zeus's child, from Hera, seething with jealousy and determined to kill the child. With the appearance of a bizarre, new, chalk-white enemy, the goddess Strife (a reimagined version of Eris, the goddess of discord who had battled Wonder Woman in post-Crisis continuity), Wonder Woman discovers she, herself, is the natural-born daughter of Hippolyta and Zeus, who, after a violent clash, became lovers. Hippolyta revealed Diana's earlier origin story to be a lie, spread amongst the Amazons to protect Diana from the wrath of Hera, who is known for hunting and killing several illegitimate offspring of Zeus.
Her outfit did not receive any prominent change until after the 2005–2006 Infinite Crisis storyline. Similar to her chestplate, her glowing belt was also shaped into a "W". This outfit continued until issue #600 – J. Michael Straczynski's run of Wonder Woman's altered timeline changed her outfit drastically. Her outfit was redesigned by Jim Lee and included a redesigned emblem, a golden and red top, black pants, and a later discontinued blue-black jacket.
Phobos returned alongside his sister Eris in alliance with Circe. Circe had amassed great power by bringing gods of various pantheons together. Among them were the Roman gods, who challenged the Olympians for their domain. It took much strength for Zeus to summon Hermes and Diana to New Olympus, where the gods had been trapped. Earth's heroes were able to turn the tide against Circe, but three gods died: Circe killed Hermes; Harmonia was killed by her sister Eris; and Eris herself was slain by Son of Vulcan. Zeus and the Olympians decided then to follow the call of Cronus and the Titans to help guide other worlds in the universe. New Olympus was left to the Roman gods.
The Gods, led by Athena, create the Amazons in Greece to realize their ideals and bring humans into following them. The leader of the Amazons, Hippolyta feels a yearning for a child). She makes a clay form of a child and prays to the Gods. Hearing this the Gods give the clay form, transforming it into a live child blessed with Gaea's gift, life. The Gods grant her various abilities and she grows up as Diana of Themyscira.
The JLA's first trip to the universe is where Owlman is found hacking computer systems to get the info he needs. There, the JLA fights recruits the Crime Syndicate of America has recruited. Their second trip was when Batman followed Superwoman, and defeats her. After taking out Superwoman, he calls the JLA, and alongside the JLA travels to the moon, to get to the Crime Syndicate's headquarters. From there on, every JLA'er fights against their counterparts, and Wonder Woman manages to even win against her counterpart, Superwoman.
In addition, Diana appears to hold members of her close family in high esteem. In addition to the respect she has for her mother, Hippolyta, and aunt Antiope, she indicated that she held her father Zeus in the same very high esteem, when she was visibly angered when Lex Luthor referred to him distastefully while discussing the story of the Titan Prometheus.