Nightshade

Nightshade, once the Master of Shadows for the Peri kingdom of Meliyat, is now a fugitive and outcast. Tasked to kill the King of Calymnia, Khalis Ravencrest IV, Nightshade failed and has been on the run from the forces of both Meliyat and Calymnia ever since. 

Her black hair makes her distinctive among the Peri, who usually have stark-white hair. A more cautious person might try to color their hair or hide their Peri ancestry, especially with such as high price on their head, but Nightshade is far too proud and self-confident for such caution.