Fictional Substance refers to materials or elements that exist only in works of fiction, such as books, movies, or video games. These substances often possess unique properties or abilities that defy the laws of physics and chemistry, allowing for creative storytelling. Examples include unobtainium from science fiction or vibranium from superhero comics. Writers use fictional substances to enhance their narratives, create conflict, or develop characters. By introducing these imaginative elements, authors can explore themes like power, morality, and the consequences of technology. Such substances often become iconic within their respective universes, contributing to their popularity and cultural significance.