Yōkai are supernatural creatures from Japanese folklore, often depicted as spirits or monsters. They can take various forms, ranging from mischievous to malevolent, and are believed to possess unique powers. Yōkai are an integral part of Japanese culture, appearing in stories, art, and festivals. These beings are categorized into different types, such as Tengu, Kappa, and Yuki-onna, each with distinct characteristics and behaviors. Yōkai often embody natural elements or human emotions, serving as a way to explain the unknown or teach moral lessons. Their influence can be seen in modern media, including anime and manga.