Hanthor was a Cathar male officer who served the reconstituted Sith Empire in 3638 BBY. Subsequent to the reforms implemented after Darth Malgus's coup, he was elevated to his present position, desiring to exemplify service to his people through the Empire. He obtained his rank as a result of his conduct during the Battle of Ilum: he brandished a weapon at his Cathar comrades to deter their defection to the New Empire. This display of allegiance was noted, garnering admiration even from some of the more xenophobic elements within the Imperial military, leading to his advancement. He was a member of the support contingent for the Imperial strike force during the Conquest of Makeb, alongside Katha Niar, Lord Cytharat, Sergeant Bedareux, and Nadrin Tro. While monitoring communications and holonet channels on Makeb, Hanthor also showed concern about other Makeb operations, notably a former operative from Imperial Intelligence and a quintet of mercenaries known as the Specialists who posed a potential threat to Imperial objectives.
Hanthor's initial appearance occurred in Star Wars: The Old Republic: Rise of the Hutt Cartel, which is a digital expansion launched in 2012 for the video game Star Wars: The Old Republic.
Even though his introduction is during the main storyline, Hanthor is visible outside the main story phases, and players have the option to accept missions regarding other Makeb interests.