Transformations are a common trope in horror that involve a character changing their physical or mental state, usually into something monstrous, unnatural, or terrifying. Transformations can be caused by various factors, such as curses, diseases, magic, science, or supernatural forces. Transformations can also serve different purposes, such as expressing fears, exploring identity, or creating suspense.
One of the oldest examples of transformation in horror is the myth of the Minotaur, a creature with the head of a bull and the body of a man. According to Greek mythology, the Minotaur was the result of a curse. The Minotaur was locked in a labyrinth and fed human flesh by King Minos, until it was killed by the hero Theseus. Another ancient example of transformation in horror is the legend of the werewolf, a human who can turn into a wolf or a wolf-like creature.
A more modern example of transformation in horror is found in many body horror stories, which involves the distortion, mutilation, or infection of the human body.