The haar vhinic served as an interrogator for the Yuuzhan Vong, holding the role of an inquisitor responsible for questioning individuals they had captured.
In 26 ABY, a haar vhinic took on the interrogation of Vergere, the Fosh, following her return to the Yuuzhan Vong. Working in conjunction with the priests and priestesses belonging to the deception sect, the haar vhinic successfully obtained a significant amount of valuable intelligence from Vergere. Subsequently, he sent her to Warmaster Tsavong Lah, convinced that her intentions to aid the Yuuzhan Vong were sincere.