Trench was a male Harch and was seen as a very successful fleet admiral in the Droid armada during the Clone Wars. Trench's command style demanded respect from his subordinates, elicited dread from his adversaries and his ruthlessness was known throughout the Republic. He was given the task of blockading the planet of Christophsis. However, he was killed when Anakin Skywalker maneuvered a stealth ship to make torpedoes, fired by Trench's ship, return to their source, destroying the cruiser.