"I can show you." Melisandre draped one slender arm over Ghost, and the direwolf licked her face. "The Lord of Light in his wisdom made us male and female, two parts of a greater whole. In our joining there is power. Power to make life. Power to make light. Power to cast shadows." "Shadows." The world seemed darker when he said it. "Every man who walks the earth casts a shadow on the world. Some are thin and weak, others long and dark. You should look behind you, Lord Snow. The moon has kissed you and etched your shadow upon the ice twenty feet tall." (Jon VI, ADWD)
"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)