Diana grew up the princess of the people of Themyscira, beloved by everyone on the island. However, when "Man's World" came under attack by the Imperium, she proposed to Hippolyta that they send help. When Hippolyta refused to intervene, Diana still felt it was her duty to help. During the night, Diana secretly entered the Temple of Athena and took the goddess' magic armor. After this she received a distress call from the Martian J'onn J'onzz. Diana left Themyscira and traveled to where she felt the summons originating.
Following the distress call to its source, she arrived in a canyon along with, Green Lantern, Hawkgirl and the Flash. There, the group took part in a battle where Diana even saved Hawkgirl from one of the fighter craft. She was instantly noticed for her beauty and revealing armor, most notably by Flash. However, the others noticed as a newcomer by the others in the ways of fighting as a hero. They referred to her as "the rookie with the tiara."
Diana joined the other six individuals to combat the Imperium, first joining Batman and J'onn to destroy one of the invaders' factories in Egypt. The attack seemingly resulted in Batman's demise, forcing Diana and J'onn to meet Green Lantern and Flash in Metropolis in order to rescue the captured Superman and Hawkgirl. However, they too were captured soon after.
During the Imperium's torture of J'onn, Batman arrived, alive and well, to reverse the effects of the factory. Diana was freed of her bonds and punctured large holes in the building, letting the sunlight in to destroy the invaders. When the Imperium attempted to escape, Diana used her lasso to hold the ship down. After being hit by a laser cannon, Hawkgirl smashed her mace into the shuttle, buying time for Diana to regain control of the ship while the Thanagarian delivered the final blow.
She is voiced by Susan Eseinberg.