japanese demon tattoo The Oni Mask is very common in Japanese tattoo art and symbolizes a belief in the spirit world where demons carry out their roles of punishing the unjust and evil. Oni are known to be evil but the ones who are good symbolize protection.
Hannya mask is used in Japanese Noh theater, representing a jealous woman with a demon-like look. "Hannya" is a Japanese Buddhist term. The word means wisdom, the ability to know truth. The artist would need a great deal of the the "wisdom". The Heart Sutra, known in Japanese as Hannya Shingyo, Japanese Buddhist sutra, contains many gems of wisdom, things that we tend to forget..