She is a Frost Phantom an ice based Oni tribe and holds the rank of queen. Ragnarok also founded "Banshee" a demon mafia and serves as their boss. Sinmara, obtained the name title "Ragnarok" after the death of her father, and defeat of her rival, she is the mother of Onisaki Kirara. She has blond hair and blue eyes. Like other demons, she has pointy ears and oni-like ice horns. Has huge breasts. Driven often by her serious duty as a chief, she does not show her emotion or weakness to others. 