Thanks mate, here is a good example of a painting that has a demon but many believe it is an alien.
As far as I'm concerned they're one and the same.

Saint Wolfgang and the Devil 1475

The work of a famous German Renaissance painter Michael Pacher in the 15th century.

It is based around a legend that Saint Wolfgang, the Bishop of Regensburg in Bavaria during the 10th century, tricked the devil into building a church.
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