Yōkai are a class of supernatural monsters, spirits and demons from Japanese folklore. The word 'Yōkai' is made up of the kanji for "bewitching"; "attractive"; "calamity;" and "spectre"; "apparition"; "mystery"; "suspicious". They can also be called ayakashi (妖?), mononoke (物の怪?), or mamono (魔物?). Yōkai range eclectically from the malevolent to the mischievous, or occasionally bring good fortune to those who encounter them.