The Devil Fruit in One Piece was a special ability. By eating the Devil Fruit, one could obtain special abilities and skills. There were many types of Devil Fruits, and different Devil Fruits gave different abilities to the consumer. For example, Luffy's rubber fruit could allow him to turn into rubber in battle with strong elasticity and flexibility, while Sauron's sword fruit could allow him to use powerful sword aura attacks in battle. In addition to eating the Devil's Fruit, those with the Devil's Fruit could also improve their abilities and skills through cultivation and training. For example, Luffy had become a powerful warrior by continuously improving his rubber fruit ability through cultivation. In the story of One Piece, there were many famous owners of the Devil's Fruit, such as Luffy, Sauron, Sanji, Choba, Franky, Brook, etc. They gained powerful abilities and unique skills by eating the Devil's Fruit, which played an important role in One Piece's world.