From Kook Science

Achi is an appellation for a wild man figure that originated with the Tamanacs of the Cuchivero River, near the lower Orinoco, in what is now Venezuela. It was described as a "hairy man of the woods" and an "anthropomorphous monkey" by Alexander von Humboldt in his Personal Narrative of Travels to the Equinoctial Regions of America, who added that was it was likewise known as salvaje (from the Spanish, "savage" or "wild") or as vasitri ("great devil") by the Maipure of the Upper Orinoco River, and that it reputedly "carries off women, constructs huts, and sometimes eats human flesh".