[Varyon]

Morpheus - There are no apparent supers, but everyone has a shared dreamscape, and nearly everyone's dream avatar does have powers (it's theorized everyone's dream avatar has powers, but some simply haven't discovered theirs yet). Dream avatars pop out of existence when the person wakes up (and reappear, typically near wherever they vanished earlier, when the person goes back to sleep), are all highly resilient regardless of power set (or lack thereof), and the death of a dream avatar has rather serious ramifications on the person. Such "zombies" typically initially become withdrawn and paranoid, isolating themselves from society. Eventually, they become homicidal, although the details of this varies from person to person - they may become serial killers, spree killers, suicide bombers, etc. Those who's dream avatars are resurrected (because Supers) before the person dies will return to a degree of normalcy (they tend to stay somewhat-antisocial, but not to the same abnormal degree; those who did descend into homicide are usually rather mentally scarred from it). If a person dies in their sleep, their dream avatar lives on, similarly affected but with no way of "fixing" them - many of the most dangerous supervillains are such "ghosts."

Hypnos - This world appears to have been largely identical to Morpheus until around 5 years ago, when a man with a gadgeteer dream avatar figured out a way to create a "resurrection drug" in real life, and used it on his dead wife (who he had had cryogenically preserved). She had died in her sleep, and her dream avatar (a supervillain of some infamy) happened to have just been mortally wounded when the drug was administered. The intersection of one side dying while the other was raised caused some bizarre feedback that resulted in her gaining her avatar's abilities in the waking world. She proceeded to use her shadow-themed powers to murder large numbers of people in their sleep, and when the resulting ghosts slew other supers, the resulting zombies became the "Sandmen" - purposefully seeking out and killing those who are asleep, continuing the cycle. This cascaded until now, outside of a few scattered and terrified survivors, the only living humans are zombies, and the only dream avatars are ghosts.