Princess Diana of Themyscira is an Amazonian warrior princess and one of the world's first superheroes, known as Wonder Woman. She is the daughter of Queen Hippolyta and Zeus, king of the Olympians. Born on Themyscira, Diana was raised in paradise, hearing tales of her the Amazons' great task of defeating the God of War, Ares, and bringing peace to the world, ushering in a new era of peace to the world. Upon coming of age, Diana began pursuing the life of a warrior, despite her mother's rejections. Determined to serve, she ultimately enticed her aunt Antiope to train her in secret, but was soon discovered by her mother, Queen Hippolyta. Begrudgingly, the queen accepted Diana as a warrior, and ordered Antiope to train her better than any other Amazon.
Her various durability levels originally stemmed from her Amazonian training. In post-Golden Age and Pre-52, Demeter (Goddess of the Earth) granted her immunity to radiation and the coldness of space; she also possesses a high level of resistance against fire and high temperatures, she has been shown taking fire, lava, thermonuclear explosions, hell fire and even superman's heat vision, however, her invulnerability has a vulnerable point against piercing weapons. Wonder Woman can fight with and withstood considerable damage in the form of hand to hand combat with opponents such as Superman and Gods. Wonder Woman possesses a high resistance to damage and magical attacks. Also she was self-sufficient in the fact that Wonder Woman did not have to eat or sleep and could hold her breath under water for hours and hours. This may still hold true in the new 52, Wonder Woman has still shown the ability to fight on with little to no rest or food to replenish her strength.
The Crisis on Infinite Earths crossover of 1986 was designed and written with the purpose of streamlining most of DC's characters into one more-focused continuity and reinventing them for a new era, thus Wonder Woman and Steve Trevor were declared to come from the Earth-Two dimension, and along with all of their exploits, were erased from history, so that a new Wonder Woman character, story and timeline could take priority.
Wonder Woman experienced significant changes from the late 1950s through the 1960s during the Silver Age of Comic Books. Harry G. Peter was replaced by Ross Andru and Mike Esposito in issue #98 (May 1958), and the character was revamped as were other characters in the Silver Age. In Diana's new origin story (issue #105), it is revealed that her powers are gifts from the gods. Receiving the blessing of each deity in her crib, Diana is destined to become as "beautiful as Aphrodite, wise as Athena, stronger than Hercules, and swifter than Mercury". Further changes included the removal of all World War II references from Wonder Woman's origin, the changing of Hippolyta's hair color to blonde, Wonder Woman's new ability to glide on air currents, and the introduction of the rule that Paradise Island would be destroyed if a man ever set foot on it.
A fight broke out among the heroes for possession of the box and was only ended when John Constantine took the box, being the only one capable of doing so without being corrupted. Zatanna and Constantine took the box to the temple of Hephaestus, where the three Justice Leagues had converged again. After yet another battle between heroes, the box went dormant and the Justice Leagues discovered a Kryptonite sliver in Superman’s nervous system, placed there by the Atomica, a traitor working for the Outsider, leader of the Secret Society. Then, the Outsider used the box to open a path across universes, allowing the Crime Syndicate to enter the Justice Leagues' world.
With Artemis' help, Wonder Woman tracked Zola down to a subway station, where they found a lock of fox fur. Realizing that Zola was with Dionysus, they went to Providence, where Dionysus was currently located. They found Dionysus captured by Cassandra's minion, the Minotaur. When Cassandra's forces were about to depart to Olympus, Wonder Woman ambushed them and hung onto their plane. When the jet arrived to Olympus, the mountain was hit by a massive explosion.
Thus although by the modern depiction her accomplishments at the time seem ordinary, in that era they were more so. Diana Prince was originally an army nurse, but quickly attained the rank of lieutenant in Army Intelligence. This was partially a creative convenience so that she could be close to both Steve Trevor and received information which she needed to pursue her superheroics. In the real world though, this role in Army intelligence, even as the secretary to General Darnell, was still a rare position for a woman to hold in society. At this time as well, the character had her only real sidekicks in her history in the form of Etta Candy and the Holliday Girls. These characters gave the Wonder Woman a degree more of levity while also allowing the writers to focus on some issues which were more related to women. When Marston left the character, the strong driving force of the character to act as a strong moral guide and role model for female readers left as well and the character became more sensitive to the forces driving the industry as whole. Thus Wonder Woman changed somewhat to a more stereotypical woman. Her main interest was not always fighting crime, but for a time it became all in the interest of keeping Steve Trevor happy and interested in her for marriage. Also the backup stories featuring the Wonder Women of History were slowly phased out and replaced with features on marriage customs from around the world and trivial facts on random household objects.
One of the events that led to Infinite Crisis was of Wonder Woman killing the villain Maxwell Lord in Wonder Woman (vol. 2) #219. Maxwell Lord was mind-controlling Superman, who as a result was near to killing Batman. Wonder Woman tried to stop Superman, Lord (who was unable to mind control her) made Superman see her as his enemy Doomsday trying to kill Lois Lane. Superman then attacked Wonder Woman, and a vicious battle ensued. Buying herself time by slicing Superman's throat with her tiara, Wonder Woman caught Lord in her Lasso of Truth and demanded to know how to stop his control over Superman. As the lasso forced the wearer to speak only the truth, Lord told her that the only way to stop him was to kill him. Left with no choice, Wonder Woman snapped Lord's neck and ended his control over Superman. Unknown to her, the entire scene was broadcast live around every channel in the world by Brother Eye. The viewers were not aware of the entire situation, and saw only Wonder Woman murdering a Justice League associate. Wonder Woman's actions put her at odds with Batman and Superman, as they saw Wonder Woman as a cold-blooded killer, despite the fact that she saved their lives.