As the eldest of the seven sisters, Lucifer is their leader. Because of this, she claims to be the strongest of the sisters but is actually aware that she's also the least talented. As a result, she often acts arrogantly to hide this fact from everyone else because her biggest fear is that her sisters would sneer at her if they found out. She's very haughty and arrogant, but nevertheless actually feels pleasure from submission.
Lucifer has long, raven-black hair and the same red eyes as her sisters'. Her outfit is also the same as that of her sisters. She has the one-winged eagle symbol on her "skirt."
- Furniture of Beatrice
- Current furniture of Battler Ushiromiya
- Sister of the other six sisters of Purgatory
- She was created by Yasu in the image of a fellow head servant that worked for her, named Garashi. Garashi is also her nickname as Yasu is the shortened version of Yasuda. Her full surname is unknown.