Sakakibara Kikai's engineer Masaaki Nagumo controls the bipedal robot Mononofu from its cockpit during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's engineer Go Sakakibara checks an electric plug charging to the bipedal robot Mononofu during its demonstration at its factory in Shinto Village. Sakakibara Kikai has developed other robots and amusement machines alongside its main agriculture equipment business and rents them out for about 100,000 yen ($930) an hour, for kids birthday parties and other entertainment. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's engineer Masaaki Nagumo boards the bipedal robot Mononofu during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's engineer Go Sakakibara talks on a mobile phone to communicate with another engineer boarding the bipedal robot Mononofu during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's engineer Masaaki Nagumo controls the bipedal robot Land Walker (L) next to Mononofu during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. The company has created robots as varied as the Land Walker, the smaller Kid's Walker Cyclops and the MechBoxer boxing machine – but the mighty Mononofu towers over them all and executes more complex movements. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's bipedal robot Mononofu is pictured during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's bipedal robot Mononofu is pictured during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. It can move its fingers and turn its upper body, and walk forward and backward. It is no speedster, however, moving at less than .62 miles per hour. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's engineer Go Sakakibara poses with the bipedal robot Mononofu during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. Developed at Sakakibara Kikai, a maker of farming machinery, LW-Mononofu is a 28-feet tall, two-legged robot weighing in at more than 7 tonnes. It contains a cockpit with monitors and levers for the pilot to control the robot's arms and legs. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's bipedal robot Mononofu is pictured during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. The bazooka-like air gun on its right arm shoots sponge balls at around 87 miles per hour. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's engineer Masaaki Nagumo controls the bipedal robot Land Walker during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's engineer Masaaki Nagumo controls the bipedal robot Mononofu from its cockpit during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's engineer Masaaki Nagumo opens a hatch from the cockpit of the bipedal robot Mononofu during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's engineer Masaaki Nagumo rides a lift to board the bipedal robot Mononofu during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's engineer Masaaki Nagumo waits for a lift to board the bipedal robot Mononofu during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. (Photo by Kim Kyung-Hoon/Reuters)





Sakakibara Kikai's bipedal robot Mononofu is pictured during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan on April 12, 2018. (Photo by Kim Kyung-Hoon/Reuters)