One supposes that at some point he died, leaving his spirit to haunt the ruins. He was the power behind the throne of Balwen, and led Aridhol to the policy of 'The victory of the Light is all.while their deeds abandoned the Light.' When the city was consumed by its own evil, only Mordeth remained, bound to Shadar Logoth. As far as we know, he was an actual person at the time of the Trolloc Wars. Mordeth was the councillor whose evil brought Aridhol to its doom.
