Niyari

Niyari (lit, Japanease for Grinning, ニヤリ) is a female of an unknown race that is living in the human world. She was the cause of the nuclear explosion created by Heiya Shonin. Her relationship in the future was forged with Batalla Serenata. For her powers over Hollows, she has been dubbed: Oni (lit, 鬼).