This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Pishtaco (Peru)
A pishtaco is a mythological boogeyman figure in the Andes region of South America, particularly in Peru and Bolivia. Some parts of the Andes refer to the pishtaco as kharisiri, or ñakaq, or lik'ichiri in the Aymara language. According to folklore, a pishtaco is an evil humanoid creature—often a foreigner and often a white man—who seeks out unsuspecting natives to kill them and abuse them in many ways.
The legend dates back to the Spanish conquest of South America. Primarily, his method of killing is stealing his victims' body fat for various cannibalistic purposes, or cutting them up and selling their flesh as fried chicharrones. Pishtaco derives from the local Quechua-language word "pishtay" which means to "behead, cut the throat, or cut into slices".