The Midnight entity was the term given to an unidentified lifeform of unknown origin encountered on the planet Midnight. It was one of the few beings that the Doctor had no knowledge of at all, which, given his expansive, encyclopaedic knowledge of the universe and everything in it across time, was a testament either to its obscurity, or its extraneousness. The creature was never given a name, nor did it display any other form. The creature would possess it's victims, and if any others were in the room, repeat their words. It would possess victim after victim, usually going from most intelligent to least intelligent.