If you check this documentary out, you'll see there's a guy behind the scenes who controls it all (3 min 13 onwards). His voice is converted on the fly, and he can control body movements and where it looks with a stylus.

The technology they have is still pretty cool - you have to admit that robot has character (more than most people).

If only he *were* real, it'd be a fine day for for voice recognition / synthesis and AI...