The third of the Seven Sisters of Purgatory, Satan represents the sin of wrath. Due to her constantly angry nature, she often is the one scolding the other sisters, keeping them in lines as Furniture to Beatrice. However, underneath her spiteful anger, she's actually rather lonely after unintentionally pushing her sisters away by fear.

Satan is voiced by Hikasa Yoko and has a bit of a higher pitched voice, giving her some wickedly good cackles.