Plungbolls attached themselves to any source of warmth that happened by. Some travellers suffocated to death, covered with thousands of the creatures. To avoid this fate, a chemical called anti-plungboll spray was developed; this substance caused them to drop off their would-be victims, squeaking. (AUDIO: The Ghosts of N-Space)
Behind the scenes Edit
Plungbolls were mentioned in Doctor Who Insider #3.