Luminous being

The Luminous being was a mysterious entity that existed beyond the normal cosmology, at the beginning and the end of time simultaneously, yet outside time and space proper.

Description
The Luminous being was a cold and harsh entity, yet at the same time forgiving and warm.

Background
Little was known about the Luminous being. It was in charge of the creation and destruction of all the universes, and the overgods, including the overgod of Realmspace, Ao, seemed to be its subordinates.