Borkul the Beast

 is Bodyguard to Madanach in the Cidhna Mine. To gain passage to Madanach's cell, the player must either pickpocket Borkul for the key to Madanach's cell or obtain a shiv from Grisvar the Unlucky and give the shiv to Borkul. Borkul will not offer the Dragonborn the option to open the cell door until the player has obtained the shiv.