Maddenjot

 was second in command aboard the Teuthoidian ship, but Hectocot ate him for insubordination. However due to the effect of alternate ends of the universe being co-adjacent, another ship with him on came into existence. He was in the Chaos pool anti-chamber, and was commanded by The White Guardian to search for The Doctor and Romana II inside a crystal segment of the key. (The Chaos Pool'')