Serving as an assassin along with her twin sister Kitana, Mileena's dazzling appearance conceals her hideous intentions. At Shao Kahn's request, she is asked to watch for her twin's suspected dissension and must put a stop to it at any cost.

Murdered by her twin sister Kitana, Mileena finds herself brought back to life by Shao Kahn himself. Her skills as a vicious fighter will be needed to defeat Earth's chosen warriors. Her ability to read the thoughts of her twin sister will enable Kahn to stay on step ahead of them.

Reborn in the Netherealm and servant to Shinnok since her rebirth, Mileena finds that the coming battle gives her a chance to both escape her fearful servitude to Shinnok and avenge her own death. Knowing Kitana will fight for Edenia, Mileena ensures an easy escape route is left as she moves into battle with Shinnok.

I am creation of sorcery, the hybrid of a Tarkatan warrior and the princess of Edenia. My purpose was to eventually replace my... sister... Kitana, from whom I was cloned. Kitana regained her memories, however, and uncovered the plot to supplant her. After Shinnok's invasion, she cast me into her prison, where I remained until Baraka freed me.

My hatred for Kitana consumes my every thought. But Baraka tells me that his new lord, the Dragon King, has possession of Kitana's body and uses it as his personal bodyguard. My only chance for revenge against her will be to serve Onaga and pose as the princess, leading her precious alliance of Edenia and Outworld to their doom.

Outworld was MINE! Posing as the Edenian wench Kitana, I gained command of her army and with it took control of Shao Kahn's fortress - all in the name of "peace." I had planned to continue my charade until the Edenian forces could be corrupted enough to follow me as Mileena, the true conqueror of Outworld. But my plans were foiled when the fortress was attacked - Shao Kahn had returned!

And he was not alone! As I watched the initial assault from the safety of the imperial balcony, I recognized the two warriors who aided him: Goro, Prince of the Shokan, and Shang Tsung, wretched Sorcerer of Darkness - my creator. They crushed all who defended the stronghold.

I hid in the throne room and commanded the Edenian mages to cast a defensive ward upon the main door. It was of no use. Their magic was nothing compared to the might of Shao Kahn. He shattered the door and strode in as confidently as ever.

As he stood before me, the two mages rushed to defend their princess, positioning themselves between Shao Kahn and myself. What a surprise it must have been when their own "princess" stabbed them from behind. They fell limp to the floor. Shao Kahn paused, momentarily confused. Removing my veil, I knelt before him, "Welcome home, my master."

Shao Kahn accepted my surrender and later ordered me to capture the Earthrealm warrior known as Shujinko. He was to be used as a bargaining chip to help forge an alliance with Onaga, the former ruler of Outworld.

I sent the fool an invitation, hoping to utilize his arrogance and pride by acknowledging his heroic deeds. The ruse worked; soon he was at the main gate. Reiko's men, dressed in the armor of slain Edenian soldiers, led him directly to the throne room where he was confronted by the new Dark Alliance. I did battle with him as Shao Kahn commanded, defeating him with surprising ease. He was then cast into the dungeon, where he will remain until Onaga arrives.

I do not relish serving Shao Kahn. I am destined for greater things. An entire realm was once in the palm of my hands - and I will not rest until I regain that status! Though it will be impossible to rule Outworld now that Shao Kahn has returned, there are other realms ripe for the taking. Edenia will be mine!

Shang Tsung has created many abominable creatures in his Flesh Pits, but none so twisted as Mileena. A fusion of Edenian flesh and Tarkatan blood, Mileena is both beauty and beast. This dichotomy has made her mind unstable; she is prone to fits of madness and savagery. Though she has the appearance of a mature woman, she is more child than adult - a blank slate conformed to Shao Kahn's will. Devoid of conscience or remorse, Mileena will butcher anyone to appease her beloved father.

Perceiving a lack of loyalty in his adopted daughter, Kitana, Shao Kahn ordered Shang Tsung to create a replacement, a daughter worthy of succeeding his rule. Shang Tsung fulfilled Shao Kahn's order by fusing Tarkatan DNA with genetic material stolen from Kitana to create a cloned hybrid: Mileena. Mileena is the best of both: bloodthirsty and vicious as a Tarkatan but possessing the Martial artistry and expertise of an Edenian. When Shao Kahn was killed by Raiden, Mileena took over as the ruler of Outworld. But when she refused to align Outworld with Earthrealm against Netherrealm attack, she was deposed. She now leads a rebellion against the usurper Kotal Kahn's regime.

Mileena is the product of Shang Tsung's diabolical cloning experiments: a perfect blend of Tarkatan ferocity and athletic grace. Brought forward in the timeline by Kronika, Mileena has learned of her tragic future. Her enemies now must submit, or die.

Born mere seconds ahead of her twin sister, Mileena is the rightful heir to Outworld's throne. But even so, there are those who distrust Mileena's impulsiveness. They whisper that Kitana, with her steadier hand, should replace Mileena as heir to the throne.

As Mileena fights for legitimacy, she hides a horrible secret: she is infected with the dreaded and lethal Tarkat disease. Were her affliction found out, Mileena would be forced into battle to save her throne.

Once thought to be Kitana's sister Mileena is actually a grotesque clone created by Shang Tsung. With Shao Kahn suspicious of Kitana's motives, Mileena seizes the opportunity to attack Kahn and his minions.

Caught off guard they are match for Mileena's speed. She wins the tournament and together with her secret companion, Barkaka they rule the world as king and queen.

Winning the third tournament allows Mileena to reclaim her role as Outworld queen. With the help of Baraka she then takes both Sindel and her daughter Kitana hostage.

Together they threaten Shao Kahn with their lives unless he lures the Earth-born warriors into a fourth Mortal Kombat where Baraka can regain his title as the ultimate Mortal Kombat champion.

When Mileena is murdered, she finds her soul reborn in an evil place called the Netherealm. Here she accepts servitude to an all mighty god known as Shinnok. It is Shinnok who allows her soul to be reborn on the outworld. Her loyalty to Shao Kahn is replaced by her fear of Shinnok. Mileena plots to overthrow her own father.

The ability to read Kitana's mind and predict the Earth warriors motives, enables Mileena to set up her father's downfall. When Kahn is weakened by the onslaught of attacks, Mileena takes the opportunity to destroy her father and allow Shinnok to step forward and take both realms for his own sinister purposes.

Mileena: Kitana! I want your status, I want to be Princess of Edenia. It is my right!

Kitana: You have no right! You are not my sister! You were born of Shang Tsung's sorcery, for Shao Kahn. What right do you have to the throne of Edenia!?

Mileena: No... No!

Kitana: You are evil and have no place in this world!

Mileena: You are right Kitana. But if I have no right to this realm... then neither will you!

Kitana: AARGGHHHHH!!!

Mileena: You will die sister, and I will take this realm for myself!

Mileena: KITTYKABOOM!!!

Kitana: AAAAHHHHHHHHH!!!!

Mileena killed the emperor in a fit of deranged fury. But she was unaware that her victory resulted from Shang Tsung's designs. He had imbued Mileena with the ability to drain Shao Kahn's dark magic, rendering him vulnerable. Now Shang Tsung was ready to execute the next phase of his plan: murder Mileena and take Shao Kahn's power for himself. But Mileena instinctively wielded her new dark power against the sorcerer. Shang Tsung's end came quickly. Mileena absorbed his soul, multiplying her strength. She then set out to claim an even bigger prize: the soul of a thunder god.

Overcome with exertion, Mileena collapsed and felt her soul gliding through the ether. She awoke in an incubation chamber. Nearby were countless others--each containing an exact copy of her. Mileena found she could read each being's mind, and they hers. They quickly realized the benefit of so many fierce warriors sharing one mind. As they plotted revenge on their enemies, the architect of the Mileena's awakening laughed quietly.