Tengu

Tengu, in Japanese folklore, a type of mischievous supernatural being, sometimes considered the reincarnated spirit of one who was proud and arrogant in life, These creatures are the troublesome opponents of Buddhism, who rob temples, mislead the pious with false images of Buddha.

Carry off monks and drop them in remote places,possess women in an attempt to seduce holy men (or devout laity) , and endow those who worship them with unholy power. They were often thought to disguise themselves as priests or nuns, creatures of disorder and illusion whose sole purpose was to confound those on the quest for enlightenment.