Droids were mechanical creatures capable of performing a myriad of tasks, but one of the most necessary was undoubtedly the exercise of some form of violence, either in self-defense or to assault living beings. Security and guard droids were extremely popular throughout the galaxy, and it didn't take much to turn one of these units into a killing machine. The lack of personality and emotion in many of these droids was an added benefit: the result was an efficient, ruthless killer who asked no questions. However, these same droids were often the source of other types of problems for their owners…