Oni

Oni demons are a class of demons that are Japanese in origin. They are roughly the size of, or sometimes bigger than, human beings and have green skin, wide mouths, spade-like hands, and horns sprouting from their forehead. They were part of Valentine Morgenstern's forces of demons off the coast of New York.

Appearances

• City of Bones (first mention)
• City of Ashes (first appearance)
• City of Glass