The three-headed infernal duke Haborym resides in his prison fortress of Lasraspan on Hell's layer of Caina. Nearly eight miles in length, it is a covered iron walkway which holds prisoner the souls of some of the most dangerous beings which ever lived. These include the souls of the titan Rhysphano, the Troll Mother, the legendary frost giant Iggird Icejaw, and the rebel Hellmouth Khyedkhyed. Commanding 26 legions of bone devils, Duke Haborym holds them imprisoned for reasons known only to himself and his superiors in Hell's hierarchy.