Real World Myth
Originating from Native American folklore, wendigos are commonly viewed as malevolent, cannibalistic monsters or evil spirits. They are part of the traditional belief system of a number of Algonquin-speaking peoples and strongly associated with the winter, coldness, famine and starvation.
It is historically associated with cannibalism, murder and insatiable greed. The creature symbolizes one who is never satisfied and keeps indulging their dark vices.
Teen Wolf Myth
Stiles, in Strange Frequencies, recounts the Native American myth that says if you eat human flesh you will develop an insatiable craving for it and turn into a wendigo.
Wendigos are mostly human in appearance but with rows of sharp teeth and glowing white eyes.
They are said to have a near-insatiable hunger for human flesh. The Walcott family kept dozens of human bodies in a freezer hidden inside their home, presumably for food.