Tyrral Jerikko, a Human male, was a resident of Zakuul's Eternal Empire during the war against Zakuul. He held the rank of Battalion Commander within the Knights of Zakuul when Empress Vaylin ascended to the Eternal Throne. Jerikko participated in the Assault on Odessen in 3630 BBY, an offensive launched by the Empress targeting the Alliance. As part of the attacking force, he sought to capture the Gravestone while it was undergoing maintenance. However, Lana Beniko and the Alliance Commander engaged him in combat during this conflict, resulting in his death.