This is a disambiguation page — a list of articles associated with the same title. If an internal link referred you to this page, you may wish to change the link to point directly to the intended article.
In the earliest legends, oni were benevolent creatures said to be able to ward off evil and malevolent spirits and to punish evil-doers.
Over time, the oni's strong association with evil colored the perception of the creatures themselves, and they came to be seen as harbingers or agents of calamity.