Vermine

were creatures that travelled from another dimension using red light, and possessed anything that was red. They entered N-Space via Bevell's shop in a jigsaw piece. They wanted to invade and conquer the universe. The Doctor trapped them in a mirrored music box. (AUDIO: )
Some of the Vermine escaped through time and merged with the Vashta Nerada to create the Red Darkness. (AUDIO: )