The Holly Robot was a mobile construct that allowed the artificial intelligence Holly to attain a form of solidity and presence, and to move around in remotely. It is called the Holly Robot in the cast and crew DVD commentaries, but was also referred to as the Remote Holly Monitor in the episode scripts. It was, essentially, a monitor on caterpillar tracks. The frame was apparently steel, with a headlamp fixed to the front. Holly could also download to the Holly Watch.