Domain Lian was a Domain among the Warrior caste of the Yuuzhan Vong. While they were ruthless in battle, Domain Lian's position among the other Domains had declined considerably by the Yuuzhan Vong War, and they held secondary roles during the invasion. Four of the Domain's members were killed at the Battle of Dantooine. Deign Lian was one of the few members of the Domain to achieve a command position in years, and he was killed minutes after his escalation, but not before ordering the destruction of Ithor.
- The New Jedi Order: Dark Tide II: Ruin (First appearance)
- The New Jedi Order: Edge of Victory I: Conquest
- The New Jedi Order: Edge of Victory II: Rebirth