- Renon - vessel
- Beatrice - master
- EVA-Beatrice - master
- Lord BATTLER - master
- Lady MARIA - master
- Ange Ushiromiya - friend
- ANGE-Beatrice- master
- Stakes of Purgatory - sisters
- Sakutarou - co-furniture / friend
She has a wavy, middle-length green hair, fair skin and big red eyes. Her clothes are the same as those of the other Stakes. She wears the one-winged eagle on her "skirt".
Her green hair could possibly be a reference to the term "Green with envy."
Advanced-level Furniture created by Beatrice. She can act by her own will, but she cannot disobey the orders of her master. She is quite powerful while in her human form, but when she returns to her true form as Stake of Purgatory and fly at her enemy at high speed, she shows her full, terrifying potential.
Leviathan often speaks to Lucifer on behalf of the youngest sisters. At her best, she has a brutal, deeply envious nature and is adept at spotting people's weaknesses. However, she is actually nothing more than a selfish crybaby. For some reason, she's not a very quick thinker, and she often comes in last among the sisters, ends up with the short end of the stick, and cries. She'll do whatever it takes to get what she wants.