The youngest of Noctus's royal siblings, ignored by her seniors for her age.  Regardless of her official standing, she is ingratiated to the Captain of the Royal Guard and on speaking terms with the Vizier of Noctus.  Her disgust with the decadence of the oldest leads her to declare war on the rest of the siblings, using her bloodline's powers and natural charisma to become a ruler who will lead Noctus to glory.

Voice-wise, she needs to be young but charismatic and calm.  While she is the main villain, for the first part of the series she will be more like a secondary protagonist, and will require some emotional range beyond typical baddie.