HK-101

HK-101 was an HK-series assassin droid who served Darth Lithos and the Lost Sith after its capture from the abandoned HK-50 factory on Nar Shadda. He possessed the same though processors but had modified servomotors and combat-reaction programming, allowing it to fight as well as some force-sensitives. Whereas all previous HK units had glowing orange photoreceptors, HK-101's were piercing red. Also, it was modified with blackened cortosis armor. Its most major modification, however, was the addition of a red lightsaber to its vast assortment of weapons. It also contained inbuilt sonic and electrostatic weapons, allowing it to access powers similar to those of the Force.

It used Form V as its primary lightsaber combat technique, but it could switch to Form III and Form I at will to confuse opponents.