The American theme of Diana's costume was explained by Pérez in the Challenge of the Gods storyline in which Diana engaged in a series of trials arranged by Zeus as punishment for refusing his advances. Diana met the spirit of Steve Trevor's mother, Diana Trevor, who was clad in armor identical to her own. Trevor revealed that during World War II she had crashed on Themyscira while on duty as a U.S. Army pilot. She blundered into an Amazon battle against Cottus, a multi-armed demon, at the portal to the underworld. Trevor was drawn into the battle, although she was armed only with her side arm. She wounded the beast before suffering a mortal blow, allowing the Amazons to reseal the portal.
As Hippolyta was still a clay statue, Diana was forced to take the Amazon throne, at least until she could find a way to turn her mother back to normal. At the same time, the Justice League had discovered strange environmental events that had destroyed small villages around the world, leaving only vegetation behind. Furious, Wonder Woman attacked Swamp Thing, accusing him of causing such devastation, while Swamp Thing claimed innocence. Aquaman defused the situation before it could escalate any further. Later, Wonder Woman returned to Themyscira, only to discover Hippolyta's statue had crumbled. On a training session, Clark asked Diana if she wanted to talk about her recent experiences, but Diana replied that, as queen, grief is not a luxury she could afford. Later, Diana was called for a meeting by the Amazon council, which forced a choice on her: become permanent Queen or abdicate the throne. Before the discussion could continue, the island was attacked by Stymphalian Birds, Ares’ pets who were now drawn to Diana as the God of War. Accepting her new responsibilities, Diana successfully defended Themyscira.
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.