The Sony humanoid robot prototype SDR-3X is held by professional Sumo wrestler Tamarashi ("Bullet-storm"). Sony Corporation announced the development of this small bipedal walking robot in November of 2000. By synchronizing the movements of 24 joints on its body, Sony says, the robot can perform basic movements such as walking and changing direction, rising from a seated position, balancing on one leg, kicking a ball, and dancing. Tokyo, Japan.