A demon is often described as a supernatural being that embodies evil or malevolence. In various cultures and religions, demons are thought to tempt, harm, or possess humans. They are frequently depicted in stories and folklore as dark, frightening figures that can influence people's thoughts and actions. In popular culture, demons appear in movies, books, and video games, often as antagonists that heroes must confront. They can take many forms, from monstrous creatures to more subtle, manipulative entities. The concept of demons is closely related to ideas of good vs. evil and the struggle between light and darkness.