Zara

Zara was a female Human appearing Amazonian warrior who served as the ruler of her own Realm

History
At some point, her dimension was conquered by he armies of Shao Kahn and incorporated into Outworld. She would form an alliance with Princess Kitana and Ramath the Keeper of the Crystal Realm in order to bring about an armed rebellion against Shao Kahn's forces. However, she would betray her comrades in order to gain the Swords of Ilkan during the fighting which resulted in the death of Ramath and Zara's banishment.

She would spend many years and lose many of her warriors in finding one of the Swords of Ilkan. She would later fight against Princess Kitana once again and her comrades that made the Defenders of the Realm. After capturing Jax in a life draining sphere made by her Sword of Ilkan, she demanded that Kitana find the remaining sword that she could be the undisputed ruler of the realms.

After Kitana recovered the second sword, Zara and her would engage in personal combat but when she started to lose, Zara attempted to make use of one of the Swords of Iklan but was defeated. Kitana opened a rift into the Void and banished Zara into that realm.

Background
Zara was a skilled warrior and military commander but one that was obsessed with the acquisition of complete power. After she was banished and defeated by Kitana, she developed a great deal of enimity for the Princess of Edenia.

Source

 * Defenders of the Realm - Swords of Ilkan