The user speedstar contacted me directly about needing more "evil" clipart, so I spent the last few hours cleaning up, modifying and synthesizing old public domain sources to hopefully fill that request. This is some sort of horned monster/demon.
惡魔頭
demon、devil、evil、head、Hell、horns、horror、monster、Non-Human Beings、Satan
惡魔、魔鬼、邪惡、頭、地獄、牛角、恐怖、怪物、非人類、撒但
資料來源：openclipart ( https://openclipart.org/ )