The Oni represents a demon and spirit of hell in Japanese mythology. An ugly figure with horns, chasing evil souls. Traditional disguise on New Year's Eve to ward off evil spirits.
The ogre emoji was introduced in 2010 and released as part of the Unicode 11.0 standard. This emoji can be found under the smileys and emotions
category. Because the ogre emoji has been around for quite some time, it should display correctly in the majority of operating systems.