Princess Diana commands respect both as Wonder Woman and Diana Prince; her epithetical title – The Amazon Princess – illustrates the dichotomy of her character. She is a powerful, strong-willed character who does not back down from a fight or a challenge. Yet, she is a diplomat who strongly "favors the pen", and a lover of peace who would never seek to fight or escalate a conflict. She's simultaneously both the most fierce and most nurturing member of the Justice League; and her political connections as a United Nations Honorary Ambassador and the ambassador of a warrior nation makes her an invaluable addition to the team. With her powerful abilities, centuries of training and experience at handling threats that range from petty crime to threats that are of a magical or supernatural nature, Diana is capable of competing with nearly any hero or villain.
Veronica Cale employed the toxicologist Colonel Poison, who led Team Poison, a team that attempted to capture Diana and Steve. In order to protect Diana in her vulnerable state, Steve had her admitted to a mental hospital in London. Team Poison continued to pursue Steve, Barbara and Commander Etta Candy, however. Barbara, who had been a member of Godwatch when she was Cheetah, decided to speak to Veronica herself. Cale and Doctor Cyber showed Barbara footage of Team Poison, who were about to kill her friends, and Barbara agreed to become Cheetah again in exchange for Veronica calling off the team and sparing their lives.
Marston introduced the idea to Gaines. Given the go-ahead, Marston developed Wonder Woman, whom he believed to be a model of that era's unconventional, liberated woman. Marston also drew inspiration from the bracelets worn by Olive Byrne, who lived with the couple in a polyamorous relationship. Wonder Woman debuted in All Star Comics #8 (cover date Dec/Jan 1941/1942, released in October 1941), scripted by Marston.
"Gas was intended to win the war. On that much Wonder Woman is absolutely right." said David Hambling in Popular Mechanics. Rachel Becker of The Verge stated that despite the scientific liberties of using a "hydrogen-based" chemical weapon as a plot device, the film succeeds in evoking real and horrifying history. "First off, mustard gas is such a horrible, terrifying weapon, it doesn't need to be made more potent. But if you were a chemist bent on raining destruction on the Allied forces, you wouldn't do it by replacing the sulfur atom in mustard gas with a hydrogen atom. You'd know that sulfur is the linchpin holding together this poisonous molecule."
The storyline "The Circle" was focused on the revelation of a failed assassination attempt on Diana when she was a baby, by four rogue Amazons. These Amazons – Myrto, Charis, Philomela and Alkyone, collectively referred to as The Circle – were Hippolyta's personal guards and were extremely loyal and devoted to her. However, when Hippolyta decided to raise a daughter, The Circle was horrified and considered the baby ill-fate, one who would ruin their entire race. Thus, after Diana was sculpted out of clay and brought to life, The Circle decided to assassinate the baby. Their attempt was foiled however, and the four Amazons were imprisoned. After years, the Circle escaped their prisons with the help of Captain Nazi, and decided to accomplish their previously failed mission and kill Diana. Diana defeated Myrto, Charis, Philomela and then approached Alkyone, who runs off and succumbs to her death by falling into the ocean. The other three Amazons return to their prisons.
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.