A Transformers toy whose robot head detached and formed a separate, smaller robot (officially, a Nebulan alien in special body armor). While the Transformer was in vehicle/animal mode, the head was required to detach and could ride inside a special compartment as the pilot. In robot mode, the head plugged into the robot's shoulders and activated a concealable display on his chest which would read out the Transformer's strenth, speed and intelligence tech spec ratings.
Compare to Targetmaster and Powermaster.