This is a dancing robot that has been developed by Sony. Originally the name Qrio stands for Quest for curiosity, also know as a Sony Dream Robot. It is a bipedal humanoid entertainment robot developed and marketed (but never sold) by Sony to follow up on the success of its AIBO toy. QRIO stood approximately 0.6 m (2 feet) tall and weighed 7.3 kg (16 pounds). QRIO's slogan was "Makes life fun, makes you happy!"

Now for its development:-

The QRIO prototypes were developed and manufactured by Sony Intelligence Dynamics Laboratory, Inc.The number of these prototypes in existence is unknown. Up to ten QRIO have been seen performing a dance routine together; this was confirmed by a Sony representative at the Museum of Science in Boston, MA on January 22, 2006.

Four fourth-generation QRIO prototype robots were featured dancing in the Hell Yes music video by recording artist Beck. These prototypes lacked a third camera in the center of the forehead and the improved hands and wrists which were added to later prototypes. It took programmers three weeks to program their choreography.

The 4th generation QRIO's internal battery lasts about 1 hour.