He rules the fallen army. The fallen army consists of the souls who are dead and lived in the Underworld. These souls have agreed to serve to the Fallen King for eternity. He is friends with the Molten Boss, the Gravedigger, and the Void Reaver, but is enemies with the Commander, who has hunted him down for years. He has a wife, called the Fallen Queen (she's not in TDS but shut up), and has 2 children, the Fallen Prince, aka the Fallen Swordmaster, and the Fallen Princess, aka the Fallen Archer