Librarian King

Librarian King is the king of the Huldrefólk. He is the tallest of them and has a black mane the others lack.

History
He spent years on the surface working as a librarian - collecting lost things and stories.

When Anna, Elsa and Kristoff were about it be thrown into magma, he ordered to set them free, after Echo told him that they saved his life. Later he let them see the Library of Lost Things, where his assistant Obscuren took them.

Abilities

 * Leadership
 * Speaking human language fluently
 * Changing his skins color
 * Hiding

Echo
Echo is his relative, he treated her saviors as friends.

Obscuren
Obscuren is the king's assistant.

Books

 * Frozen II: Forest of Shadows