Domain Shai was a Domain of the Yuuzhan Vong Warrior caste. Members of the domain were known for their devotion and enjoyment of pain, extreme even by the standards of the Yuuzhan Vong. A particularly notable member of Domain Shai was Mongei Shai, who was part of the Yuuzhan Vong scout force that entered the galaxy. His death on the planet of Bimmiel in the exhibition was a source of pride for the Domain, and they were among the Domains that supported Domain Jamaane in their coup against Supreme Overlord Quoreal.