The Ogre emoji?is indeed inspired by the traditional Japanese theater mask that represents the character of the same name in Japanese folklore. The mask is usually painted red or blue with exaggerated features like horns, fangs, and a furrowed brow.
As an emoji, the Ogre can be used in various contexts, depending on the message's tone and the user's intention. As you mentioned, it can signify a range of emotions, including anger, frustration, and malice. It can also be used humorously to indicate someone or something's unattractive appearance or unusual behavior.
U+1F479
? Japanese ogre