Since 2007, researchers at Tokyo University's ISI Lab have been working on a prototype of a running robot, which we've seen several of in the past. Athlete Robot (as it is seemingly dubbed) is a little bit different though. While it hasn't outwardly been given the humanoid treatment in any significant way, technologically, it works very much like a human. As you'll see in the video below, early prototypes of the bot which were less 'human' like in design didn't function as well as the newer version, which boasts McKibben artificial muscles and a biologically correct musculoskeletal system. Now, the robot still can't run very far without falling over, but it's impressive to watch its movements nonetheless.