Oompa-Loompas are dwarves in Roald Dahl's fictional books Charlie and the Chocolate Factory and Charlie and the Great Glass Elevator. They come from Loompaland and are the only people Willy Wonka will allow to work in his factory due to the risk of industrial espionage. They are only knee-high with astonishing haircuts, and are paid in their favorite food, cacao. -The Oompa-Loompas were first featured in Roald Dahl's 1964 children's book, Charlie and the Chocolate Factory. The original book first portrayed Oompa-Loompas as black pygmies from "the very deepest and darkest part of the African jungle where no white man had been before". After the book's U.S. release, complaints of racism caused Dahl to rewrite the characters as dwarves with "golden-brown hair" and "rosy-white" skin. In the 1971 musical film adaptation, Willy Wonka and the Chocolate Factory, the characters were again reinterpreted as orange-skinned and green-haired - very similar to the Munchkins of 1939's The Wizard of Oz. In the 2005 adaptation, restored to its original title of Charlie and the Chocolate Factory, the Oompa-Loompas are small, with short dark hair and bronzed skin, and are all played by the dwarf actor Deep Roy. Roy's stature was diminished on screen to an apparent height of 75 centimetres (30 inches), using digital compositing and forced perspective. They communicate only through song, mimic, and gestures. As seen in the film, they also have a singular gesture of accord, in which they cross their arms and closed hands up to their chest in a way that resembles the greeting gesture of the aliens in Plan 9 from Outer Space. Source from: http://en.wikipedia.org/wiki/Oompa_Loompas

I am not sure, Ironicly that is what my granddaughter calles me Oompa loompa. Lmao!

I would say that they are human pygmies.