Nods are an army of warrior Fairy Folk that lives in The Oak of Sorrows.
Guardians of Childhood
In time, the Nods became the eyes and ears of Jack through out the world. They fly great distances on their various Bird Mounts and observe in every land the well being of children. With their Midnight Trumpets they can sound the call to action of a child in need and let Jack know if he must come to aide.