A long time ago, Zahard and the 10 Great Warriors entered the Tower and undertook gruelling tests. They were then recognised as the rulers of the Tower. As time went on, their Empire eventually expanded reaching the 134th Floor of the Tower. There are currently 135 confirmed Floors, though the Zahard Empire has only expanded up to the 134th Floor, as Zahard nor any other person has yet to conquer the 135th Floor.