Estor Arkelander was the oathsworn of the Dragon Halkorania. He was known to be a terrifying man who slaughtered the armies of the Titans whenever he met them in the field. Of all the Dragonlords, the brothers Telamok and Estor were considered the most effective fighters. The Heroes of Thylea discovered that he had turned into an eldritch entity after a deal with Lutheria. He was killed once again by being thrown off the ship into the Underworld by Tryntia.