Mythical Zoans are a special category of Zoan Devil Fruits in the One Piece universe. Unlike regular Zoans, which allow users to transform into animals, Mythical Zoans grant the ability to transform into legendary creatures from mythology. These fruits are rare and often possess unique powers that can significantly enhance the user's abilities. Examples of Mythical Zoans include the Hito Hito no Mi, Model: Nika, which allows the user to become the sun god Nika, and the Tori Tori no Mi, Model: Phoenix, enabling transformation into a phoenix. Users of these fruits often gain extraordinary powers, making them formidable in battles.