<Excerpts from the "History of Battleroids">
In 2194, a war was fought between the Independent Asteroid Government of Icarus and its neighbor, the Republic of Thermopylae on the asteroid of Onicis 492. These two small governments soon became the testing grounds for new weapons. Dead soldiers were recycled in makeshift battleroid factories. Easy to manufacture chips enhanced the fragile human brain, and genetically enhanced muscles and titanium bones replaced the fragile human form. The modern battleroid was born. Of course, the war was short. Battleroids got onto both asteroids and killed almost everyone.
The rampage of the Battleroid was short lived.
Twenty years later, the United Interplanetary League set up rules for the appropriate use and storage of Battleroids. Of course, any nation that used them for the allowed purpose, also had them lying about in stasis chambers in case of war.