Domain Lian existed as a Domain within the Warrior caste of the Yuuzhan Vong. Even though they demonstrated brutality in combat, by the time of the Yuuzhan Vong War, Domain Lian's standing relative to other Domains had fallen significantly, resulting in them occupying supporting roles throughout the invasion. During the Battle of Dantooine, four members of the Domain perished. In recent years, Deign Lian was a rare member of the Domain to attain a position of command; his escalation resulted in his death shortly thereafter, but he still managed to command the destruction of Ithor before he died.