Thergor was an Orc, but a highly unusual one. He was of the breed of Orcish mages and shamans and trained an evil Astrologer while at the same time he was a highly stealthy and agile Assassin. He commanded a team of Dark Elite Nightblades, reporting to The Seventh of the Nazgûl. In the years about TA 2950 he had made his quarters in a reclusive vale in the Ered Nimrais and was overseeing a number of secret missions and public executions concerning a plot about the Gondorian town of Minas Brethil.