If robots that mimic animal or human behavior are your nightmare fuel, turn away now. Researchers at the Tokyo Institute of Technology went one step further with a skeleton robot, giving it human-like muscles to help with movement. The microfilament muscle "tissues" connect to joints and expand/contract just like the real thing. In fact, the robot has the same number of muscles in its legs as we do. At this point, they're not very strong and though the strands help with smoother movements, the skeleton still requires assistance to walk.