The chief chemist associated with General Ludendorff who specializes in chemistry and poisons. On her role, Anaya said, "Well, it was a small role in this big ensemble, but it is an important character in the story. I'm going to be a big nightmare" for Wonder Woman and Steve Trevor. Describing her character, Anaya said, "Dr. Maru loves rage and enjoys people's pain. She's creating terrible weapons, and her purpose in life is to kill as many people as possible, and provoke as much pain as possible". She researched World War I and Fritz Haber, the scientist who created mustard gas, to prepare for the role. On the character's facial scars, Anaya stated, "I went to Patty Jenkins and asked, 'What happened to her?' And she said, 'She did it on purpose.' I was like, 'What? Patty, you're going further than I ever imagined.' She said, 'She wants to provoke painful suffering, so she tested her own gas on her own face. She wanted to know how deep this form of her gas would go, so she put it on her own face.' You can see half of her face is completely gone. This is the sadistic side of Dr. Maru". She also stated her character "is quite the opposite to the lead role of this movie, one of the strongest characters ever of DC comics, Wonder Woman. I can tell you that Doctor Poison is someone with a capacity to provoke so much pain." On Dr. Maru's relationship with General Ludendorff, Anaya said, "I think that they have a relationship based on loyalty. Ludendorff is a very tormented General that lacks self-confidence. That's why, in part, he takes these drugs that Dr. Poison gives him. They are from different worlds, but they complement each other".
In 1911, when Marston was a freshman at Harvard, the British suffragist Emmeline Pankhurst, who’d chained herself to the gates outside 10 Downing Street, came to speak on campus. When Sanger faced charges of obscenity for explaining birth control in a magazine she founded called the Woman Rebel, a petition sent to President Woodrow Wilson on her behalf read, “While men stand proudly and face the sun, boasting that they have quenched the wickedness of slavery, what chains of slavery are, have been or ever could be so intimate a horror as the shackles on every limb—on every thought—on the very soul of an unwilling pregnant woman?” American suffragists threatened to chain themselves to the gates outside the White House. In 1916, in Chicago, women representing the states where women had still not gained the right to vote marched in chains.
The Invisible Plane was a creation of Diana's during her younger years on Paradise Island. She created it to be an improvement on her mother's planes which would be shot down in Man's World. The result of her innovation was an invisible plane that could fly at terrific speeds silently and not be detected by hostile forces. Initially, it was portrayed as being transparent.
Paquette detailed the changes he made to Wonder Woman's costume, stating that he removed the iconic American flag theme and instead incorporated a Greek influence: "The animal associated to Aphrodite is a dove so instead of an eagle on [Wonder Woman's] breastplate, it will be more of a dove. It's not the American eagle, it's the Aphrodite dove. Stuff that creates [the letter] W is by accident, so it's not like she already has a letter of the alphabet on her [costume]. In the end I've created a structure so it feels inevitable for Wonder Woman to look the way she does."
Hermes Action Comics #267 (August 1960) Hermes is the Messenger of the Gods, and the God of Thievery, Speed, Travel, and Commerce who is based on the god of the same name. Post-Crisis, Hermes was one of Wonder Woman's earliest allies. He was eventually killed by Circe during the War of the Gods, but Wonder Woman freed him much later from Tartarus. In the New 52, the bird-like Hermes was a close ally to Wonder Woman and aided in protecting Zeke, the reincarnation of Zeus. Post-Rebirth, Hermes took the form of a tortoise and aided Wonder Woman alongside several other gods.