User 553 was one of the Users. He was banished from BZPower for a conflict with another member. He was knocked out, which meant he was a perfect vessel for the evil intelligence known as Caiaphus. After Caiaphus possessed and twisted his body to his liking, the Makuta used 553 to fight Nadle and Klak. When Nova Klak killed Caiaphus, it was assumed that 553's body was destroyed. In reality, only the modifications were. 553 then awoke on his home planet as if nothing had happened. This was not the User's time to die.