From Tar Valon Library
Author: Kyria d'Oreyn
Dermon was a Jenn Aiel during the building of Rhuidean. He was a gaunt, white-haired man with blue eyes and a strong voice. Like all Aiel, he was tall, with a sun-darkened face, and dressed in the same fashion, except for the veil. He no weapon but a belt knife.
He was accompanied by Mordaine and Narisse to the sept chief's meeting at Rhuidean, where he spoke for Rhuidean and the Jenn. He asked the sept chiefs why they carried no swords, but they did not know. He then told them whoever wanted to lead among the Aiel had to come to Rhuidean to be tested, and also to learn why they carried no swords.
(References: The Shadow Rising, Chapter 25)