HK-47

HK-47 was a hunter-killer assassin droid built by Darth Revan to kill opposing leaders, thus destabilizing the Old Republic. He was later used as the model for the HK droid series.

Biography
HK-47 was originally created by Darth Revan to be the quintessential assassin. While he was completely loyal - friendly, even - to those he identified as "master", he had virtually no regard for any form of life, and was driven by an unquenchable thirst for blood. He characteristically used the term "meatbag" when speaking of organic lifeforms, especially humans. This insult was originally used in passing by the driod when insulting Revan's friend and apprentice, Darth Malak. Revan found the insult (as well as Malak's annoyance) funny enough to order HK to consider all organics as "meatbags".

He was a high-performance assassin droid who excelled and delighted in all manner of violence. Despite his inherently menacing appearance, he was often mistaken for a protocol droid by many, and he used this to his advantage on more than one occasion, hiding his true nature. He actually had a number of protocol functions in additional to his less legal ones, being fluent in Galactic Basic, a Sand People dialect, the beeps and whistles of astromech droids, and many other forms of communication.

It is unknown if Revan programmmed some of HK's "morals and ethics" or if they simply formed on their own but one quote is quite interesting. When the Exile asked HK-47 if he knew what love was, the droid responded: "Definition: 'Love' is making a shot to the knees of a target 120 kilometers away using an Aratech sniper rifle with a tri-light scope... Love is knowing your target, putting them in your targeting reticule, and together, achieving a singular purpose against statistically long odds." Whether this was a metaphor with wisdom or merely more of the droid's blood lust is arguable.