Sarah Louise Kerrigan is a major character in the Starcraft Real-time Strategy Game series.

She is a powerful Terran psychic and former Ghost Operative of the Terran Confederacy. She later defected and joined the Sons of Korhal, becoming the lieutenant of its leader Arcturus Mengsk.

Following Mengsk's betrayal in the Battle of New Gettysburg on the planet Tarsonis, Kerrigan would be captured by the Zerg Swarm and later infested by The Overmind into becoming one of his most powerful agents: The Queen of Blades.

Following, the death of The Overmind via Tassadar's Sacrifice, Kerrigan was able to take the Overmind's place as leader of the Zerg.

As a human, Kerrigan was once a beautiful young woman with long red hair which she kept in a ponytail and green eyes. She wore a standard Terran Confederacy Ghost Uniform consisting of White Body Suit with a light breastplate and shoulder pads. In combat she wore a tactical visor and fought with a C-10 Cannister Rifle designed for long range combat. She had the ability to make herself invisible, disable mechanical units, and read minds.