The tall, thin B1 model resembles the Geonosian species, whose Baktoid Armor Workshop designed and built the droids for the Trade Federation and later the Separatists. Standing tall, B1 battle droids were given a humanoid appearance so they could operate existing machinery and weaponry, and are meant to be cheaply mass-produced in large numbers. During the Battle of Naboo, battle droids were controlled from a central command computer as a cost-saving measure. By the time of the Clone Wars, this drawback was rectified by giving them the capacity for limited independent thought. The B2 super battle droid, introduced in the Battle of Geonosis, was designed by the Techno Union and manufactured by Baktoid as an improvement of the original B1 model. Heavily armored and capable of limited independent thought, it features an integrated dual laser cannon in its right arm.