Puhua - known as Puhua in Chinese, the legendary precursor to the eponymous Fuke Zen school of Buddhism in Japan

"Zhenzhou Puhua, also called P'u-k'o, and best known by his Japanese name, Fuke, was a potentially mythical Chinese Chán (Zen) master, monk-priest, wanderer and eccentric, whose existence and many affairs were advanced by the now defunct Fuke Zen or Hotto-ha sect, or sub-sect, of Japanese Rinzai Zen Buddhism in the 17th or 18th century with the publication of the Kyotaku Denki (虚鐸伝記), probably first published around 1640. For the komusō (虚無僧) monks of the Fuke sect, he was considered the traditional antecedent — at least in spiritual, mythological, or philosophical terms — of their order, which was formally established in Edo Japan. It is possible that the ideological roots of the sect derived from the Rinzai poet and iconoclast Ikkyū and the monk Shinchi Kakushin (心地覺心) who traveled to and from China and Japan in the 13th century. Still, according to some accounts, the sect is simply a more direct derivative of the Rinzai school and its teachings. - Wikipedia"