Sareena is a character from the Mortal Kombat video game series. She is one of Quan Chi's three personal assassins ordered to kill Sub-Zero before he reached Quan Chi.
In Mortal Kombat Mythologies: Sub-Zero, she is "fractionally faster and a more accomplished fighter than her fellow assassins." After being spared by Sub-Zero, she assists him in defeating Quan Chi. After expressing her desire to escape the Netherrealm with him, she is shot in the back by Shinnok. As it is later revealed in Mortal Kombat: Tournament Edition the attack destroyed her human form and that her essence was then banished as punishment for her betrayal. After years of torture, Sareena escapes the Netherrealm in her human appearance before MK: Deadly Alliance, during which she encounters the younger Sub-Zero; the brother of the one she met before.
Feeling he owed her for helping his brother, Sub-Zero grants her sanctuary with the Lin Kuei back on Earthrealm. In MK: Armageddon Sareena follows Sub-Zero into the Netherrealm, saving him from being killed by Noob Saibot and Smoke. After the battle, Sareena loses her human form and returns to her true demon self but not before Sub-Zero was left unconscious, dazed and still confused Sub-Zero attacked and Sareena fled to the depths of the Netherrealm, not wanting to harm him.
However, Noob Saibot, Smoke, and her former master Quan Chi, who demanded she provide them information about the Lin Kuei, later attacked her. At first, Sareena refused, determined to remain loyal to Sub-Zero. But Quan Chi then cast his dark sorcery upon her, returning her to her human form and then convincing her that she can never be good and that she is simply a pure evil demon. Swayed by Quan Chi's corruption, she agreed to serve him once again. In MK: Armageddon Konquest, Sareena, Kia and Jataaka are ordered by Quan Chi to kill Taven, but all three assassins are defeated by Taven. She also appears in Mortal Kombat (2011) as one of the fighters in the Pit background, usually facing of against Daegon or Frost.