Elise Jost of Moviepilot observed that "Gadot's take on Wonder Woman is one of those unique cases of an actor merging with their story, similar to Robert Downey Jr.'s Tony Stark. Gal Gadot is Wonder Woman, and Wonder Woman is Gal Gadot." Jost praised Gadot's interpretation of Wonder Woman as the one in which Gadot "absolutely nails the character's unwaveringly positive outlook on life. She's a force of nature who believes in the greater good; her conviction that she's meant to save the world is stronger than her bullet-deflecting shield. She's genuine, she's fun, she's the warm source of energy at the heart of the movie." The Federalist suggests that Wonder Woman is "a story of Jesus". "The movie is wrapped up in faux Greek mythology, true, but there's no mistaking the Christology here." "Perhaps Christ in the form of a beautiful and kick-ass Amazon is all that our contemporary society can handle right now", stated M. Hudson, a Christian feminist. On HuffPost cultural critic, G. Roger Denson, who regards the superhero genre as a source of contemporary "Mainstream Mythopoetics" ("the making of new yet vitally meaningful, if not symbolic, stories filled with imagery reflecting, yet also shaping and advancing, the political, legal, moral and social practices of today"), wrote that the "No Man's Land" scene "that people are crying over in theaters and raving about afterward happens to be among the most powerfully mythopoetic scenes ever filmed at the same time it is one of the oldest myths to have been utilized by artists and writers after it had been invented by early military strategists and leaders." Specifically "used by director Patty Jenkins", the scene raises "the esteem for powerful yet compassionate women as heroes and leaders to a level equal with that of men for having won over a huge and adoring popular audience around the world".
Although she initially forbids Diana to be trained as a warrior, Hippolyta reluctantly agrees to let General Antiope, Hippolyta's sister and Diana's aunt, train her, only more rigorously than any other warrior. In 1918, Diana, now a young woman, rescues US pilot Captain Steve Trevor when his plane crashes off the Themysciran coast. The island is soon invaded by German soldiers that had been pursuing Trevor. The Amazons kill the crew, but Antiope sacrifices herself to save Diana. Steve is interrogated with the Lasso of Hestia and reveals that a great war is consuming the outside world and that he is an Allied spy. He has stolen a notebook of the chief chemist Dr. Isabel Maru, who is attempting to engineer a deadlier form of mustard gas under the orders of General Erich Ludendorff from a weapon facility in the Ottoman Empire. Believing Ares to be responsible for the war, Diana arms herself with the "Godkiller" sword, the lasso, and armor before leaving Themyscira with Steve to locate and stop Ares for good.
Diana is depicted as a masterful athlete, acrobat, fighter and strategist, trained and experienced in many ancient and modern forms of armed and unarmed combat, including exclusive Amazonian martial arts. With her godlike abilities of incalculable superhuman strength, nigh-invulnerability, speed, flight, healing factor and semi-immortality, Diana’s fighting prowess is enhanced. In some versions, her mother trained her, as Wonder Girl, for a future career as Wonder Woman. From the beginning, she is portrayed as highly skilled in using her Amazon bracelets to stop bullets and in wielding her golden lasso. Batman once called her the "best melee fighter in the world". The modern version of the character is known to use lethal force when she deems it necessary. In the New 52 continuity, her superior combat skills are the result of her Amazon training, as well as receiving further training from Ares, the God of War, himself, since as early as her childhood. The Golden Age Wonder Woman also had knowledge in psychology, as did her Amazon sisters.