Morrigan

Morrigan is a demon-god of vengeance from the demon people (Val-Nostia), the 'goddess of vengeance' and leader of the harpies. She has no body of her own and parasitizes hosts, and she wields masterful mind control.

Long ago the legendary hero Warlock sealed her with a temporal seal in the ancient dungeon beneath Alveria's capital. Through Laura's silver bracelet (a heretical relic), Morrigan infiltrated Reina and throughout her childhood whispered as the 'voice of her mother,' slumbering within her as a demon-god's power.

As the story's final antagonist she partly turned Reina into a demon at the coronation. In the decisive battle Varis destroyed Morrigan with the spell of the spacetime ring-prison (jikuu-kanrou). Varis's second, reincarnated personality shielded him from her mind control.