Flying Robot Spider from Japan

The University of Tokyo's robotics department has developed a terrifying and impressive robot that walks on four extended legs and flies, too. They call it SPIDAR, which is a tortured acronym for "SPherIcally vectorable and Distributed rotors assisted Air-ground amphibious quadruped Robot." The challenge of this robot was making it powerful enough to walk and fly while keeping the weight low enough for air travel. SPIDAR uses 16 thrusters to fly, and to assist the small servo motors used for walking. This is a prototype that's not all that efficient, and it's really loud. But it accomplished its purpose, and will no doubt be refined to make it actually scary.