BX-2.0 are slim and are in charge of manufacturing goods. While having excellent engineering skills, they have trouble reading. It's not often you will see them working alone as they are group workers. BX-2.5 are more 'puffy' or rounded in design as they work heavy-duty and usually work more complicated or domestic jobs (i.e. labs, hospitals, chocolate factories, soup kitchens). With needle-like fangs, they can calculate the amount of sugar and iron in one's bl00d.
