A day before Whedon's departure from Wonder Woman, Warner Bros. and Silver Pictures purchased a spec script for the film written by Matthew Jennison and Brent Strickland. Set during World War II, the script impressed executives at Silver Pictures. However, Silver stated that he had purchased the script because he did not want the rights reverting; while stating the script had good ideas, Silver did not want the film to be a period piece. By April 2008, Silver hired Jennison and Strickland to write a new script set in contemporary times that would not depict Wonder Woman's origin, but explore Paradise Island's history.
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".
The New 52 version of Earth 2 was introduced in Earth 2 #1 (2012). In that issue, the Earth 2 Wonder Woman is introduced via flashback. She, along with Superman and Batman, are depicted dying in battle with forces from Apokolips five years in the past. This Wonder Woman worshiped the deities of Roman mythology as opposed to the Greek; the Roman gods perish as a result of the conflict. An earlier version of the Earth-2 Wonder Woman, prior to the Apokoliptian invasion, is seen in the comic book Batman/Superman, where she is seen riding a pegasus.
Diana, princess of the Amazons, trained to be an unconquerable warrior. Raised on a sheltered island paradise, when a pilot crashes on their shores and tells of a massive conflict raging in the outside world, Diana leaves her home, convinced she can stop the threat. Fighting alongside man in a war to end all wars, Diana will discover her full powers and her true destiny. Written by ahmetkozan