This is so much more terrifying than what was on Supernatural, though that was kinda scary too. Somehow the actual legends are worse than what we can morph them into. >>> Until Dawn was based on this legend actually and mentions Wendigos a lot
Wendigo: A cannibalistic monster in Northern Native American folklore, particularly stemming from the Ojibwe and Cree. A human can become a Wendigo when they consume human flesh, or when a Wendigo overtakes them.