Obsidian

Tamuz is the leader of an ancient tribe of fire demons who live in the heart of the Abyss Mountains, where molten lava flows. Possessing incredible physical strength and a ruthless nature, he has earned the title of Supreme General. His goal is to sow war and destroy all weakness. During the events of the Night Palace, Alice and Dirrot encounter Tamuz, attempting to unravel the mystery of the dangerous Mistress of the Abyss, Obsidia.

Obsidia was once the first and most powerful ruler of the Abyss, feared by her subjects as the "Goddess of Death." Her power was absolute, and she generously rewarded all who obeyed her, but death awaited those who dared to rebel.
No one knew that the ruler sitting on the throne was in fact a puppet, a vessel created by the God of Darkness. Realizing she was nothing more than a slave, Obsidia rebelled but was killed. Sometime later, she was reborn from her own remains. Now her main goal is to find and destroy the God of Darkness and cleanse the Land of Dawn of the "spawn of decay."