Admiral Trench was a Harch male who served as an admiral in the Confederacy of Independent Systems during The Clone Wars.
He was known for his tactical genius and was considered one of the most dangerous and cunning commanders in the Separatist military.
Trench was responsible for several Separatist victories, including the capture of several Republic cruisers in the Battle of Christophsis.
He was also known for his cybernetic enhancements, including an additional pair of arms and an enhanced brain.
Trench was presumed dead after the Battle of Malastare Narrows, but he later resurfaced and fought in the Battle of Anaxes, where he was ultimately killed by Anakin Skywalker.
His tactics and strategic mind were studied by both the Republic and Separatists, making him a legendary figure in The Clone Wars.