Aggressor-series battle droid, alongside IX-6 heavy combat droid and LON-29 battle droid commander
The Aggressor-series battle droid was unusual in that it didn't come with any ranged weapons, but used a dire vibroblade as its primary weapon. Its dedication to melee combat made them an unexpected, unorthodox and unusual opponent in a fight. While the simplistic combat programming prevented the droids from being much of a threat to the Sith, Farrfin Droidworks planned on activating a hidden update in droids' programming, which would replace their primitive combat programming with a more sophisticated one, making the droids a significant and widespread threat to the Sith.
Darth Krayt used several Aggressor-series battle droids as training droids for his Sith underlings.
- Legacy Era Campaign Guide