Yamabushi began as yamahoshi, isolated clusters (or individuals) of mountain hermits, ascetics, and "holy men", who followed the path of shugendō, a search for spiritual, mystical, or supernatural powers gained through asceticism. This path may or may not have had a founder, as the myths surrounding En no Gyōja are numerous and complex; he is quite similar to a Japanese Merlin in this way. Men who followed this path came to be known by a variety of names, including kenja, kenza, and shugenja.