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."
In one episode, a newspaper editor named Brown, desperate to discover Wonder Woman’s past, assigns a team of reporters to chase her down; she easily escapes them. Brown, gone half mad, is committed to a hospital. Wonder Woman disguises herself as a nurse and brings him a scroll. “This parchment seems to be the history of that girl you call ‘Wonder Woman’!” she tells him. “A strange, veiled woman left it with me.” Brown leaps out of bed and races back to the city desk, where he cries out, parchment in hand, “Stop the presses! I’ve got the history of Wonder Woman!” But Wonder Woman’s secret history isn’t written on parchment. Instead, it lies buried in boxes and cabinets and drawers, in thousands of documents, housed in libraries, archives and collections spread all over the United States, including the private papers of creator Marston—papers that, before I saw them, had never before been seen by anyone outside of Marston’s family.