While leading his clan, Esok settled himself on the Khoonda plains at Dantooine following the start of the Mandalorian Wars, trying to make a living. While there, he and his men joined up with a group of war veterans under the leadership of the mercenary Azkul.
When Meetra Surik guided Mandalore the Preserver to Azkul's encampment on Dantooine, just outside of the old ruins containing the Star Map, Esok refused to follow his summons to Dxun, where the Mandalorians were regrouping. Instead, he tried to claim his helmet in an attempt to declare himself Mandalore. However, the new Mandalore proved to be too much for him, and he was killed in the fight. After the display, Esok's warriors agreed to follow Mandalore.
- Star Wars: Knights of the Old Republic II: The Sith Lords: Prima Official Game Guide
- The Complete Star Wars Encyclopedia