The Mechalus were once Human, once used by the empire in their original development of cybernetic enhancements, after a few generations something went wrong and the offspring started being born with an affinity for cybernetic enhancements, to the point of requiring such devices to be implanted in them at a very young age. In time even these enhancements bred true and the Mechalus race was born true, however, this is when they found the true motives behind the Empire's encouragement of breeding these children as they were taken into custody and then enslaved, being considered no longer human.