Domain Hool was a Domain among the Shaper caste of the Yuuzhan Vong. Domain Hool was placed in charge of Vongforming Coruscant into Yuuzhan'tar, until Supreme Overlord Shimrra executed Ch'Gang Hool for incompetence, blaming him for the "plagues" that had been affecting the worldshaping. In reality these were conscious acts of sabotage committed by the World Brain at Jacen Solo's behest.