Sony
Sony have a department specialising in creating robots such as the Aibo and the Qrio.
This department is known as Sony Dream Robotics.
Sony keep their internal strategy on such things fairly quiet, and they are also not particularly good at encouraging the robot hacker/modder community, although they are warming up and improving.
Their platforms are clearly some of the most sophisticated in commercial mass production, and have the largest ranges of sensors and degrees of freedom. However - their robots are also some of the most expensive.