"There was once a noble race. But they evolved to live off other beings. In due time they adapted to their new lifestyle, becoming small, white creatures"
- - Encyclopaedia Takania (86:2)
Parasitic Fluff are white, very small, partially-intelligent pieces of living cotton that infect people by attaching themselves to somebody's armour and crawling inside. Most of their abilities are unknown, although they like to absorb antidermis.
Before they speak, they have think of the coding for individual words inside their heads. If they get one single code wrong they say an entirely different word. This is why what they say doesn't often make sense.