Unknown

Unknown (アンノウン) is a character from the "Arifureta Shokugyō de Sekai Saikyō" series.

He is a powerful demon from Hell.

Appearance
Unknown's body is covered in shadows with many flames that appeared like blood vessels.

Biography
Unknown killed Claudia Barenberg's parents after she summoned him when she was nine years old. It intended to possess her so that she could give birth to him and allow him to rule the world, but was stopped when members of the Vatican arrived and repelled him away.