Battlemaster to his fellow Aldar, Han-Silnar, Yen-Sorte was renowned among his kind for his unparalleled skill in combat. On his leader's orders, he slew Dekalb in a swift and merciless battle lasting little more than half a minute. This infamous act of murder was a first among the Aldar and became known as the Great Betrayal. He was then slain in battle by Matsuhama later on in the War of Humanity.