|Title||The Demon of Gluttony|
|Race||Furniture , Demon|
|First Appearance||Turn of the Golden Witch|
|Voiced By||Yuri Yamaoka|
Beelzebub is the sixth sister of the Stakes of Purgatory. She represents the demon Beelzebub and the corresponding sin of Gluttony.
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.
Beelzebub is the gourmet of the sisters and is known for being a big and picky eater. She would use any ingredients to make a good meal, even her own body. Her personality is similar to Mammon's, and the two sisters often fight over the same thing. She's always talking about food, which makes her a calming influence among the sisters. However, she also has that disturbing desire to kidnap pretty boys and store them in the food cellar...
She has brassy hair in two short drill pigtails, a fair skin tone and big red eyes. Her clothes are the same as those of the other Stakes. She wears the one-winged eagle on her "skirt".
Along with her sisters, she is first seen as they carry out the murders for their master. She and her sisters are always portraited as high level furniture that follows Beatrice's orders flawlessly and loyally. Beelzebub in particular in this chapter kills Gohda by staking him in the head.
Beelzebub and the other stakes torment Battler to no end, staking him to death countless times. She and the others witness the challenge between Beatrice and Virgilia both scared and amused. The sisters also humiliate the eldest sister, Lucifer, when she failed to kill Kanon. Beelzebub, as the others, seems displeased of her new master, Eva-Beatrice especially when the witch substitutes the Seven Stakes with the Siestas, calling her and the others unworthy of her.
- Beelzebub is based on the servant Berune, who worked for the Ushiromiya's along with Yasu.