|Title||Stake of Wrath|
|Also Known As||Satan the Wrathful|
|First Appearance||Turn of the Golden Witch|
|Portrayed By||Yoko Hikasa|
Satan (サタン Satan?) is advanced-level furniture created by Beatrice. Satan takes on the role of the constantly angry class president among the sisters. She is known for giving out rapid-fire scoldings, which makes the other sisters scared of her. Because of this, no one is willing to talk back to her, which means she is surprisingly lonely. She'll sometimes intentionally try to do things that should anger the other sisters, but they never scold her back, which leaves her even more lonely.
Satan is a prominent figure of Abrahamic religion, known as the deceiver who leads humanity astray. Satan is often portrayed as a fallen angel. According to Peter Binsfeld's classification of demons, Satan is one of the seven princes of hell, associated with the Deadly Sin of Wrath.
Sayo Yasuda's perception of Satan is based off of Sanon, a servant Sayo met while at the Fukuin House.
Satan appears as a young girl with white shoulder length "drill" hair and red eyes. Like her sisters, she wears a skintight black uniform with a white collar, pink tie, and red jacket. The One-Winged Eagle is imprinted on her uniform.