The Master of the Tribunal assisted Zeratul in a mission to retrieve heroes from Aiur during the Brood War. When Zeratul brought the force to Aiur, the Master of the Tribunal warned him that several Renegade Zerg broods were present near the stasis cells inhabited by the heroes. Ulrezaj and three other rebel Dark Templar were captured by Zeratul's forces and brought to Shakuras for trial. The Master of the Tribunal was part of the group which found them guilty of treason. However, the rebels were freed by a band of mysterious terrans before the sentence could be carried out.