???

??? is a mysterious entity that appears before Penix in Penix Tight: Ass Attorney.

SPOILERS!

It is assumed that ??? is the master of the Velvet Room, as they seemingly teleports Penix into it towards the end of the game. They gift Penix immense strength and teaches him how to summon God's Vessel as a Persona. In exchange for giving him enough power to stay alive after defeating God's Vessel, Penix trades every other Persona card he's gathered. Penix is then teleported back to reality, able to seemingly finish off Peter.

??? later acquires the Ring of Eternity.