An immortal Amazon warrior goddess who is the crown princess of Themyscira and the daughter of Queen Hippolyta and Zeus given to the Amazons to raise, and half-sister of Ares. Describing Wonder Woman and her appeal, Gadot said, "She's relatable. She has the heart of a human and is very compassionate, but her experiences—or lack of them, her naivete, really—make her interested in everything around her and able to view the world in a way that we'd all like to: with a genuine curiosity." On Diana's relationship with her mother, Gadot said, "Diana is a very opinionated girl. Her mother is very opinionated. Her mother is very protective as well, and they have, you know, the very natural clash that a mother has with her daughter, with their daughters, the first time they want to leave home." On taking on the role as Wonder Woman, Gadot stated, "I feel very privileged that I got the opportunity to portray such an iconic, strong female character. I adore this character and everything that she stands for and everything that she symbolizes." On Diana going to the world, Gadot stated, "When Diana comes to the real world she's completely oblivious about gender and society rules, that women are not equal to men." Describing Diana's relationship with her mother and aunts, Jenkins said, "She is the only child they raised together. And their love for her manifests in a different way for each of them." On working with Gadot, Jenkins said, "Gal quickly became the person I wanted to talk to about everything. We'd shoot together all day. And then on weekends, we'd be like, 'What do you want to do?' That's maybe not totally normal."
As the men helped the Amazons prepare for battle against the First Born's army, Diana received news that the First Born had been attacking other gods' realms. With Eros and Artemis, Wonder Woman ambushed the Minotaur at Demeter's home. Unfortunately, the First Born had already defeated Demeter, so Wonder Woman sent her companions to safety while she confronted him by herself.
The events of Crisis on Infinite Earths greatly changed and altered the history of the DC Universe. Wonder Woman's history and origin were considerably revamped by the event. Wonder Woman was now an emissary and ambassador from Themyscira (the new name for Paradise Island) to Patriarch's World, charged with the mission of bringing peace to the outside world. Various deities and concepts from Greek mythology were blended and incorporated into Wonder Woman's stories and origin. Diana was formed out of clay of the shores of Themyscira by Hippolyta, who wished for a child; the clay figure was then brought to life by the Greek deities. The Gods then blessed and granted her unique powers and abilities – beauty from Aphrodite, strength from Demeter, wisdom from Athena, speed and flight from Hermes, Eyes of the Hunter and unity with beasts from Artemis and sisterhood with fire and the ability to discern the truth from Hestia. Due to the reboot, Diana's operating methods were made distinctive from Superman and Batman's with her willingness to use deadly force when she judges it necessary. In addition, her previous history and her marriage to Steve Trevor were erased. Trevor was introduced as a man much older than Diana who would later on marry Etta Candy. Instead, Perez created Julia and Vanessa Kapatelis, a Greek-American scholar and her teenage daughter whom Diana would live with when she was in Man's world and would be major supporting characters in the series for years.
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.