Fiends are often described as malevolent beings or creatures that embody evil or wickedness. In folklore and mythology, they can take various forms, such as demons or spirits, and are typically associated with causing harm or mischief. The term is also used in literature and popular culture to refer to characters that exhibit extreme cruelty or malice. In a more casual context, "fiend" can refer to someone who is excessively enthusiastic or obsessed with a particular activity or interest, such as a video game fiend or a sports fiend. This usage highlights a strong passion rather than a negative connotation, showing how the term can have different meanings based on context.