A fiend, in the context of storytelling and folklore, refers to a villainous character often characterized by malevolence and cunning. These figures typically embody evil traits and engage in actions that harm others, making them central antagonists in narratives. Fiends can take various forms, from mythical creatures to human adversaries, and are often driven by a desire for power, revenge, or chaos. In literature and popular culture, fiends are frequently depicted as manipulative and ruthless, using their intelligence to outsmart heroes. They may possess supernatural abilities or advanced technology, enhancing their threat level. Examples of fiends include Sauron from The Lord of the Rings and The Joker from Batman.