For the TV character, see TV:Our Lady Underground.

Our Lady Underground or O.L.U. was the nickname given to the goddess that the Murs Magicians attempted to summon. She is kind, gracious and majestic. She helped to save Fillory, as well as every magic in the world.

She holds a nest in one of her hands, and a rod in the another. The half of her face is always dark, as a result of her captivity in the Underworld.