Gualichu

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Gualichu or gualicho, in the Mapuche mythology and mainly in the Tehuelche culture, was an evil spirit or demon, comparable but not similar to the Devil.

As the Araucanians had not a properly called god of evil, Gualichu was not worshipped but feared.

He was blamed for every disease or calamity, and all evil happenings were said to be caused by him.

Gualichu could enter people's body or objects and then an exorcism had to be performed to expel him.

He was a purely spiritual being and there is no depiction of him.

He was believed to live underground.