Oni - "Demônio" do folclore japonês
I love this one! Japanese Oni | Devil mask Ao-oni(blue Devil)
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Posts on Vernacular Research | jeanettedutton
I like this because there are multiple masks and each are very different my favorite is the middle one in the bottom.
Couple with traditional Devil, or Oni-masks. Devil masks serve two purposes; the first, to portray the devil and create disasters or cause the plague, and conversely they are used to ward off evil spirits