Colloquial Terms: The Grotesque, the Reverie, Somnivore, Oneirophage, the Living Nightmare, the Restless Dream, the Dark Carnival, Eternal Waking, DREAM, Phobetor
Physical Description: PRE21 has none
Behavioral Characteristics: Appears to be a sort of sentient nightmare that infects victims while they sleep. Those who have been attacked by PRE21 often report bizarre and horrifying dreams that left them in a state of terror and unease even after waking. Victims also often develop sleep disorders such as narcolepsy and (most commonly) somnambulism. In certain rare cases, victims have suffered permanent brain damage as a result of an attack.
Victims commonly report their dreams as taking the form of a large and grandiose circus, with all sorts of strange and exotic acts. However, this is by no means universal. Some victims have hallucinated clowns, freaks, and other such circus folk following them in their daily, waking life.
It is commonly believed that PRE21 is capable of trapping its victims in an eternal sleep, not unlike a coma. For obvious reasons, this has never been verified.