Duppy

In Caribbean folklore, it is the spirit of a dead man, capable of taking the form of animals (in particular a three-legged horse) or people (for example, "Susan-with-long-tits" (Long-Bubby Susan), which she throws over her shoulder). He moves backwards. If he has not taken someone's form, then he looks like a haze or a ghost, or even a white translucent skeleton. 

No one can take a picture or record dappy on video.