Sheeva is a member of the Shokan race of Outworld. Like others of her race, she possesses four arms. Sheeva first appeared as a playable kombatant in Mortal Kombat 3, although she was mysteriously dropped from Ultimate Mortal Kombat 3.
During his invasion of Earthrealm, Shao Kahn appointed Sheeva as personal protector of Queen Sindel. However, when Shao Kahn appointed Motaro, a member of the Centaurion race, to lead his Extermination Squads, she developed an overwhelming feeling of resentment towards the emperor. The Centaurs and Shokan have been mortal enemies for millennia, and Sheeva saw this as an insult to her and the Shokan race.
She learns of Kano's capture and imprisonment by Motaro. She decides to sneak into Shao Kahn's palace and make her way to where Kano was being held. She offers him freedom in exchange for his assistance in assassinating the emperor. Kano agrees. However, Kano double-crosses Sheeva and secretly informs Shao Kahn of her plot. When she enters Shao Kahn's throne room, she is ambushed by the emperor.
Apparently, she was killed by Shao Kahn. However, she makes an appearance as a playable kombatant in Mortal Kombat: Armageddon.
Alignment:
Alignment: Evil
Mortal Kombat 3

Sheeva was hand picked by Shao Kahn to serve as Sindel's personal protector. She becomes suspicious of Shao Kahn's loyalty toward her race of Shokan when he places Motaro as the head of his extermination squads. On the Outworld, Motaro's race of Centurions is the natural enemy of the Shokan.
Mortal Kombat: Armageddon

A female of the four-armed shokan race, Sheeva once served as protector of Queen Sindel. As brutal as Goro and Kintaro, she possesses more than enough power to destroy any opponent unfortunate enough to cross her path.
Mortal Kombat (2011)

Sheeva is a member of the four-armed Shokan race. Her markings reveal that she is of the royal Draco lineage. Like all Shokan, she pledged her life to Shao Kahn, bringing honor to her race by serving him. During an attack by Edenian rebels on Shao Kahn's fortress, Sheeva fiercely protected Queen Sindel and prevented her capture. She was subsequently appointed Sindel's personal bodyguard until the queen's mysterious death in Earthrealm. Sheeva is now the master jailer of Shao Kahn's oppressive dungeon.
Mortal Kombat 11

The male Shokan scoffed when Sheeva entered their contest to choose the Shokan's next leader. But Sheeva proved herself more than their equal. After a resounding victory, she was crowned the first Queen of the Shokan. As Queen, Sheeva now leads her people in the fight to attain their rightful place, as partners in Outworld's rule.
Mortal Kombat 3

While Sheeva serves her master on Earth, her race of Shokan are being punished on the Outworld. Kahn now favors Motaro's race of centaurs and aids them in defeating the Shokan. After learning of these events, Sheeva turns on her master. She defeats Motaro and in a rage brings down Kahn. In freeing the Earth, she also frees the Outworld. She then returns home and works to restore the pride and respect of her race.
Mortal Kombat: Armageddon

At the moment of victory over Blaze, Sheeva was blinded by a flash of energy. When she regained her sight, she found herself standing before the Elder Gods. They were clearly alarmed that neither Taven nor Daegon had completed the quest. Their desire to prevent further turmoil prompted them to transform Sheeva into a goddess of destruction. One by one she laid waste to the realms using a powerful Kamidogu. When the realms reformed, nothing was as it had been.
Mortal Kombat (2011)

Sheeva had recognized the signs. Her people were out of favor and in decline. The Centaur would soon dominate Shao Kahn's forces while the Shokan would move inexorably toward extinction. Sheeva's act of defiance, her murder of Shao Kahn, made possible a new home for her people among the mortals of Earthrealm--a world free of both Tarkatan and Centaur. With cooperation from world leaders, Sheeva secured for the Shokan the continent of Australia. In return, they would protect Earthrealm from future invasions. For her leadership Sheeva was exalted - the most honorable Shokan in their proud history.