Vermax

The Vermax are a parasitic alien species which attach themselves to another being's nervous system and feed on chemicals released by the host's brain during dreams.

Biology
Vermax are rat-sized worm-like creatures with a circular mouth and a prehensile tail. Their sapience level is unknown, although they have demonstrated enough intelligence to ambush potential hosts.

Vermax attach themselves to the base of the host's skull and get a firm grip, being exceptionally difficult to remove. They induce the host to sleep and dream. A narcotic released by the Vermax keeps the dreams pleasant enough to prevent the host from waking, as waking up would cause the Vermax to deattach. As long as the host remains asleep, the Vermax keeps feeding.

Appearances

 * Men in Black: The Series, s01e11, "The Elle of My Dreams Syndrome" (1998)