Meminiteu
The Meminiteu are from the Inuit Native Americans. They are people who became cannibals and began hunting others of their people. They have shamanistic abilities, strength, and intelligence. They were always defeated by a hero with great spiritual power. Stories of these creatures are considered myth rather than history.
Citations:
Bane, Theresa. Encyclopedia of Giants and Humanoids in Myth, Legend and Folklore. United States, McFarland, Incorporated, Publishers, 2016.