The Oathbound are the leaders of Erdas's guards. They wear black uniforms, brass vambraces, and brass collars. They are sworn to protect all of Erdas's leaders and defy The Greencloaks.
- Wikam the Just: The apparent leader of the Oathbound. Wikam is said to be very un-just and has a vulture as a spirit animal.
- Brunhild the Merry: Brunhild is said to be very un-merry and has a stone viper as a spirit animal.
In the Books
The Oathbound relentlessly pursue the Four Fallen throughout the book, until a battle near the end, where Rollan creates a tunnel using the Heart of the Land, where the Oathbound cannot follow them.