Holou

Holou (帆楼, Horō) is the Goddess of Doubt and Trust, and the creator of Ex-Machina. She was the first and therefore oldest conscious being in the world and the self-declared representative of the Old Deus.

[Spoiler] Until the events in Light Novel Volume 7 and 8, she had existed inside of Miko as conditions upon winning a game they played when Miko was a child. She is currently the self-proclaimed representative of the Old Deus, but her possession of the Race Piece has yet to be determined. She played a game with Blank, called Sugoroku. [/Spoiler]