One of only a few classes of droids the Sith used throughout the empires' existence, they were used a lot during the Successors War due to their limited-Force resistant armor. They were used in excess during the attack on the Conclave on the Sluis Van Shipyards, with devastating efficiency. Their usage finally ended at the beginning of Darth Wyyrlok's reign as Dark Lord of the Decreton Empire, when the immediate deactivation of all units was ordered.