unknown artist
Among the unique transformations that the Heian Japanese wrought on Buddhist representation are the pictures of the Fudo, which were immensely popular. Of these, three remain: the Yellow Fudo (which you are not allowed to see), the Red Fudo, and the Blue Fudo. There are five fudo in all; as manifestations of the Buddha, they constitute the Myo-o (in Sanskrit, rajas), or "Great Kings." They served as guardians of the world and destroyers of evil; in line with the latter function, the Japanese depictions of the Myo-o portray them with twisted, frowning faces and protuding fangs. The Yellow Fudo holds a diamond sword (representing wisdom), and the Blue Fudo is surrounded by flames. This fierceness, however, is only limited to evildoers; to the believers, the Fudo is merciful and loving.