Targyon, a celestial body, served as the home of the Diagu, who were a population of humans. In the time of the Imperial Era, the Grand Inquisitor made a trip to Targyon, his mission being to locate Tensu Run, a Jedi Knight who had lived through Order 66. Despite the Inquisitor's demands, the Diagu would not reveal Run's location, so the Grand Inquisitor commanded his Purge Troopers to transport the children to Coruscant and execute all other inhabitants.