Sybilla Creia is half Vraithe and Half Humae. She had never been accepted by the other Vraithe because of her lineage, except for a young man named Zathan. Zathan looked out for her and always defended her. When Sybilla defected to join the Humae in the war, Zathan gladly followed. They are the only Vraithe that fought alongside the Humae and they soon became close friends to Illiana and Minaki, especially Sybilla and Illiana. Sybilla stayed by Illiana after Minaki and Hunter died.

Sybilla and Zathan © Melissa "Mushi" Arroyo-Hurshman