[quote=@PPQ Purple]
<Snipped quote by AtomicNut>
Something new I learned just now by googling. I always thought it was like the Japanese word for a demon like thing.
[/quote]

Well yes and no. It's the closest match, as sometimes they are portrayed as child eaters... Western ogres are usually brutish, huge, and sometimes have magical powers.

Oni usually have afterlife demonic traits due to their association to the eastern equivalent of Hell. 

Oh well.