The Japanese have made some really cool advancements in robotics, they tend to be the world leaders in humanoid robots in a wide variety of areas. They’ve done dancing humanoid robots that are almost indistinguishable from real. They’ve done dental robots that are incredibly close to human. They’ve even done this, which if you didn’t know better, you’d swear was real at first glance:
Then they do this:
Yes, they made some robotic buttocks. Seriously.