Odglass (オドグラス) is one of the four Great Spirits and the mother of Gusteko.
Unlike other Spirits that prefer to not interfere with the world, Odglass is said to be fond of other races, and because of this it has a long relationship with Gusteko. It also has the right to choose who the Holy King of Gusteko will become.
Odglass resides on the top of Mount Pardochia. One day, she came in contact with a human and decided to make that individual the Holy King of Gusteko. For ages, Odglass became the one that chooses the King of Gusteko.