Zoan Transformation is a concept primarily found in the One Piece manga and anime series. It refers to a type of Devil Fruit ability that allows the user to transform into an animal or a hybrid form that combines human and animal traits. This transformation grants enhanced physical abilities, such as strength, speed, and agility, depending on the animal. There are three main categories of Zoan fruits: standard Zoan, which allows transformation into a specific animal; Ancient Zoan, which enables transformation into extinct creatures like dinosaurs; and Mythical Zoan, which grants the ability to transform into legendary beings from folklore. Each type offers unique advantages and powers to the user.