Supay
In the Quechua, Aymara, and Inca mythologies, Supay (from Quechua: supay "shadow"; Aymara: Supaya) was originally an ambivalent spirit, both benevolent and harmful, a denizen of the Incan netherworld (Ukhu Pacha) who might enter the world of the living as "shadow", perhaps attempting to bring someone as companion into the world of the dead.
Some explain Supay as a single spirit or god of the subterranean realm. Either way, in the Spanish Christianized conception the Supay was turned more or less into the Devil or demons living in Hell.