Located in the Old Sorceress' Mansion basement where you fought Sarah before. Before you can access this boss you have to have the 4 poems found throughout the mansion. As you approach it, you can hear it moaning in agony. This is a difficult boss if you are prone to just attacking without a second thought as it has an ability, Reverse, that allows it to either absorb all physical attacks or all magic attacks (including Force, Gamble and elemental bombs) as healing. Persona is ironically weak to fire, despite it using Sarah's Notebook (an accessory that gives the Absorb Fire skill) as it's body's base.