User 553

User 553 is a former User who was banished from BZPower as a result of a conflict with another member. His soul was driven out of his body and left to wander the universe. His body was left in storage, and was possessed by Caiaphus, who twisted it to his liking and used it to fight Nadle and Klak.

When Klak killed Caiaphus, 553's body was restored to its original state. It was presumably later recovered and put back in storage.