They are tiny, and their intellect is derived from the combined thought impulses of large numbers of Ungooma. There are trillions of Ungooma and their combined thoughts form many thousands of distinct composite personalities. Ungooma no longer possess the ability to take over a host, but they retain the vestigial ability to exert a limited form of mind control at a distance. They are able to control other species for brief periods, and their victims often wake up not knowing how they came to be where they are.