Japan is famous for its robot technology. One study shows robots in Japan have roots in its robot anime.
The first internationally famous Japanese anime debut was Osamu Tezuka’s Astro Boy in 1963. In 1979, Mobile Suit Gundam debuted. The original animation success led to the creation of huge anime films. American movies such as Transformers and Pacific Rim were greatly influenced by Japanese robot-anime culture.
Real robots such as Honda’s ASIMO humanoid was created by Japanese robot scientists based on the robot anime they grew up with. The robotics industry in Japan no doubt has the most sophisticated technologies in the world. And because it robotics industry has roots in its anime culture, Japan tends to favor robots of cute appearance with human-like characteristics.