MK-103 is a Class Four Droid, built on the planet of Mechis III ten years ago, built for the singular purpose of assassination. This is where MK-103's memory of it's origin ends, as any other files it attempts to access further back than two years results in either deleted files or corrupted ones, according to it.
During the eight year lull of memory, it had made a significant mess in the underbellies of varying worlds, both in the deep recesses of the inner rim, and the open wastelands of the outer rim. MK-103, during this time, was a drifter; travelling from planet to planet on whatever transport it could find, usually via stowaway, or through purchasing rides.
Life was rarely quiet for MK-103

Fixing their programming error.
MK-103 has few things it desires over killing, and at one point in time, correcting their error in programming was not one. It was the result of the time spent in the people around him, and their want to have him fix his programming that at one point in time, became his motivation, even if he does not remember when it did.

Bounty: 20
MK-103's mess in the underbellies of varying worlds did not go unnoticed, and has drawn the ire of a handful of people who were affected by what happened. MK-103 has no true idea of who it was that placed the bounty on it, but does fully believe someone would be willing to do so.

MK-103 is a Class Four Assassination Droid. It was built in a humanoid form, as close to the shape of a human as it could feasibly go. It's primary plating was a dark gray set of plasteel, thickened in certain areas to provide additional protection against both combat and weather. It's head is more unique among droids of it's type, as it's only optical sensor is a not only a singular one, but a very noticeable one, right in the center of it's head.
Around it's body is a tattered brown cloak, the hood of which always kept on; MK-103 states he does not remember where it found the cloak from, but has a difficult time removing it for reasons it cannot explain.
MK-103 is completely driven by an error in it's programming. At some point during it's existence, whether it be from damage or lack of memory wiping is beyond even it, something went wrong, and the droid developed a bloodlust not found in most droids.
This urge is great, but not so much that is it all-encompassing. It is just as capable of rational thought as the next being, and will not kill without reason or permission; though it will tend to go off looking for things which will fit either description.