The Robo-One ground championships is being held in Japan to see who will win the title of strongest two-legged robot in the world.
From Reuters;

The spectacle strikes a close resemblance to a real boxing or mixed martial arts match as robots trade jabs, dodge punches and eventually knock out opponents with a crushing blow.

Video of the competition after the jump and it’s worth watching just to see the flying balloon head robot in action.

[via Spluch]