A "Shape-Shifter" is a being or entity that has the ability to change its physical form or appearance. This concept is often found in mythology, folklore, and fiction, where shape-shifters can transform into animals, other humans, or even inanimate objects. They are frequently depicted as possessing magical or supernatural powers that allow them to alter their shape at will. In popular culture, shape-shifters appear in various media, including books, movies, and television shows. Notable examples include werewolves, vampires, and characters from fantasy series like Harry Potter. These shape-shifting abilities often serve as a plot device, adding intrigue and complexity to stories.