
Mortal Kombat 1
Nitara first appeared in Mortal Kombat: Deadly Alliance. Despite being a vampire, she was a neutral character only interested in freeing her home realm of Vaeternus from Outworld.
Nitara spent much of her life trying to locate a mysterious orb that bound Vaeternus to Outworld. She eventually discovers its location in the Lava Shrine, however, it is submerged in the lava, thus making it inaccessible to her. By chance, she encounters Cyrax while he is traveling through Outworld. With his cybernetic body, he had the ability to withstand the heat of the lava and retrieve the orb.
Nitara realizes that she would need to offer Cyrax something in return for his services, but what? She decided to obtain the aid of Reptile by offering him the Kirehashi blade, which she explains is an artifact from his home world of Zaterra. Satisfied with her gift, Reptile agrees to attack Cyrax. She instructs him to damage Cyrax's arm console so he can no longer travel between realms.
Reptile was successful in his attack on Cyrax and fled once his mission was complete. Almost immediately after the attack, Nitara presents herself to Cyrax and offers to return him to Earthrealm if he retrieves the orb for her. He agrees, and the two travel to the Lava Shrine. Once Nitara has the orb, she immediately smashes it on the floor, causing Vaeternus to be released from Outworld. The ordeal knocks her unconscious, but when she awakes, she realizes she is finally home.
During the events leading up to Mortal Kombat: Armageddon, mass vampire killings begin to occur in Vaeternus. The wounds on the bodies indicate that the attacker is using an ancient bladed called Datusha, which was forged for the sole purpose of slaying vampires. Nitara is sent by her people's elders to Edenia, where it was prophesied that a great weapon could be obtained in a crater there. This power would allow Nitara to destroy the blade and the one who carries it.
However, during her journey, she encounters Ashrah in Vaeternus. Ashrah is in possession of the Datusha blade, and Nitara realizes that she is the one responsible for the deaths of her people. She attacks Ashrah, but Ashrah is too powerful. As she escapes, Nitara lures Ashrah to Edenia, believing that as long as Ashrah's attention is fixed upon her, the other vampires in Vaeternus will be safe.
Alignment:
Alignment: Neutral
Mortal Kombat: Deadly Alliance

The vampire Nitara had at long last discovered the location of the Orb that bound her realm to Outworld. Unfortunately, it rested in a location she could never access. However, the ninja cyborg Cyrax of Earthrealm had the ability to retrieve it for her. Through careful manipulation, she convinced Reptile to engage Cyrax in combat and destroy his arm panel in the process. The damage to his transporter left him stranded in Outworld. Her plan was coming together beautifully.
Nitara offered to send Cyrax back to Earthrealm if he could retrieve the Orb from its hiding place. Nitara carried a gemstone around her neck. These gemstones made it possible for her people to traverse the realms. They had done so for ages and had even visited Earthrealm regularly in search of blood. Cyrax had no choice but to accept the offer and journeyed with her to the presumed location of the Orb. As they traveled across Outworld, however, they had the strange feeling that they were being followed.
Mortal Kombat: Tournament Edition

The vampire Nitara had at long last discovered the location of the Orb that bound her realm to Outworld. Unfortunately, it rested in a location she could never access. However, the ninja cyborg Cyrax of Earthrealm had the ability to retrieve it for her. Through careful manipulation, she convinced Reptile to engage Cyrax in combat and destroy his arm panel in the process. The damage to his transporter left him stranded in Outworld. Her plan was coming together beautifully.
Mortal Kombat: Armageddon

The realm of Vaeternus had regained independence from Shao Kahn. I was revered for my part in the victory. The restructuring of our civilization was well underway; soon we would regain our former majesty. Unfortunately our honor was not all that had returned from ages past....
Reports of genocide raced throughout the restored Moroi Empire. Many vampires had been slain; none had yet survived an attack to describe the assailants. I set forth to uncover the truth. Examining the wounds of the dead, I came to the disheartening conclusion that these murders were not the work of a band of assassins. The victims had fallen to the blade known as Datusha, the bane of the Moroi. The ancient kriss had found a new wielder. It had returned for vampire blood.
Though Datusha's origin has been lost to history, its purpose is clear: It lives to kill as many vampires as it can. We are a powerful race; there are few who threaten our immortality. It has been speculated by the Elders that the sword itself may be our one "natural" predator.
The accursed blade finds a wielder and corrupts them into believing they are slaying for some higher purpose. In the past it has chosen a vampire as its puppet. The last was Kahil Grigesh. Though he was driven mad by the power of the sword, he was strong enough to eventually overcome its mind control. To atone for slaying his fellow vampires, he took the sword into the Netherrealm, where he committed hara-kiri, imprisoning Datusha in Hell.
It was believed that the sword would never find another vampire wielder in that desolate place. Safe from slaughter, our numbers had exceeded those of any recorded era. But with Datusha's return, vampires were being rapidly driven to extinction. Something needed to be done!
The Elders researched ancient vampire texts, hoping to find some means of defeating the blade. An obscure Edenian prophecy they found might hold the key. It describes a force of great power concealed in a crater there. I was commanded to find this power and use it against our foe.
As I made for Edenia, I came upon a massacre. The bodies of my vampire kin lay everywhere. Amidst the carnage stood a woman in white wielding the unholy kriss. Enraged, I did battle with her -- but she was too powerful. I broke away, luring her out of Vaeternus as I escaped.
As long as her attention is fixed on me, the vampire nation will be safe. I must draw Ashrah closer to the crater and use the Edenian weapon against her. This may be our only hope of eliminating the blade once and for all. May the Moroi Live Eternal!
Mortal Kombat 1

Nitara's race of vampires hails from the dark and desolate realm of Vaeternus. To survive, they evolved the ability to feed on the blood of other creatures.
The Vaeternians thrived, building a great society. But as their comfort grew, so did their shortsightedness. They overfed on Vaeternus' creatures, disrupting the natural order. They now starve as it collapses.
It is Nitara's solemn obligation to deliver her people from hunger and save her race. Vaeternus must survive.
Mortal Kombat: Deadly Alliance

After what seemed like an eternity, Cyrax finally emerged from the lava, holding the Orb that had bound Nitara's realm to Outworld for ages. At last it was within her grasp. She would be able to free her people from Shao Kahn's imprisonment. Fulfilling her end of the bargain, she sent Cyrax back to his Earthrealm home in exchange for the Orb.
Nitara stared into the Orb. It seethed with the power trapped within. She raised it above her head, and then smashed it to the floor. It shattered with an inhuman, soul-rending howl. Its horrible energy exploded away, and tore her consciousness from her. She awoke later for the first time on her native soil.
Mortal Kombat: Armageddon

The gift of godlike power transformed Nitara into a blood god. Horrified, the kombatants fled from the pyramid, but none were spared her wrath. Beginning with Shao Kahn, she mutated each of them into her vampire slaves. With the most powerful warriors in the universe at her command, Nitara and her unstoppable army easily conquered the realms.

Deadly Alliance & Armageddon