Sony developed SDR-4X as a part of the SDR series. It has 24 synchronized joints; can walk, balance on one leg, get up, kick a ball, dance; and recognize image and sound.
Sony's Dream robot, also known as SDR-3X, is a legged robot that can perform simple movements. It can walk, get up on its own, dance and perform many other actions.
Tsukuba University developed twin robots called Gemini. These museum guide robots speak to each other instead of giving sequenced storyline to visitors for each museum exhibits.