HK-51 series assassin droid

HK-51 assassin droids were advanced versions of HK-50 assassin droids that were manufactured by G0-T0 in the HK Manufacturing Plant.

Behind the Scenes
In a removed part of Star Wars: Knights of the Old Republic II: The Sith Lords, G0-T0 would confront HK-47 on Malachor V, and a group of HK-51 droids would come and help him defeat G0-T0. The HK Manufacturing Plant was also a removed part of the game.

Appearances
Star Wars: Knights of the Old Republic II: The Sith Lords (removed due to time constraints)