Keden Qan was the first Royal Engineer of the Letherii Empire. Keden served the Letherii empire from the founding of the empire to the sixth decade. During the planning phase of the settlement building plan, Keden made a thorough survey of the land, and found that the three extant Jhag towers were actually a part of a larger complex, something that did not quite make sense due to their wandering and individualistic nature. This meant that the site of the city of Letheras was actually a pre-dispersion site for the Jaghut, a place where the Jaghut, or some of them, lived in a community before they split up. An alternative explanation given by Keden was that the site belonged to a loyal Jaghut family that stuck with each other.