"You seem overconfident of your abilities, dark one. I am no helpless Cerebrate to be assailed under cover of darkness. I am the Queen of Blades, and my stare alone would reduce you to ashes. You and your ilk cease to amuse me. Prepare yourself for oblivion’s embrace."
Kerrigan [is] a twenty-six-year-old female Terran psychic, trained both physically and mentally as an expert espionage agent and assassin. Initially the second-in-command of the Sons of Korhal, a revolutionary movement headed by Arcturus Mengsk against an oppressive Confederacy of Man, she is captured by the insectoid Zerg and infested, turning her into a human/Zerg hybrid completely under the control of the Zerg Overmind. She becomes one of the Zerg’s most powerful agents, but during the Brood Wars she replaces the Overmind, following the Overmind’s destruction at the end of the great war, and gains control of the Zerg to seek dominance over the galaxy. (source)