 This disfigurement would disqualify him from the kingship, but the Ulstermen do not want to depose him, so they ban mirrors from his presence so he will never learn of his deformity.Seven years later he whips a serving girl, who in anger reveals the truth to him.Fergus returns to Loch Rudraige in search of the sea-monster, and after a two-day battle that turns the sea red with blood, kills it, before dying of exhaustion.