The latest humanoid robot on the market can purportedly run across a grassy lawn, do cartwheels and even fist-fight – and it costs less than $6,000.

Humanoid robots showcased their talents at the opening ceremony of the first World Humanoid Robot Games in Beijing.

Alan Tudyk, who played Sonny in "I, Robot," says his character was more popular than Will Smith's, so he was kicked off the film's press run.