The Monster Manual describes Medusa as “a victim of a terrible curse, the serpent-haired medusa petrifies all those who gaze upon it, turning creatures into stone monuments to its corruption.”

The Monster Manual states that “blink dogs take their name from their ability to blink in and out of existence, a talent they use to aid their attacks and to avoid harm.”

Black Dragons are described in the Monster Manual as creatures who “loathe seeing the weak prosper and revel in the collapse of humanoid kingdoms. They make their homes in fetid swamps and crumbling ruins where kingdoms once stood.”

Black Dragons are described in the Monster Manual as creatures who “loathe seeing the weak prosper and revel in the collapse of humanoid kingdoms. They make their homes in fetid swamps and crumbling ruins where kingdoms once stood.”

The Monster Manual describes Will-o’-wisps as “malevolent, wispy balls of light that haunt lonely places and battlefields, bound by dark fate or dark magic to feed on fear and despair.”

The Pokédex describes Gengar as “mean-spirited creatures that enjoy tormenting people, hurting them and overtaking them. They are most active during full moons, creeping out in the dead of night and disguising themselves as shadows.”