Usopp was the third person to join the Straw Hats, and he serves as the crew's sniper. He is very accurate, and he primarily uses a slingshot with various types of ammunition. One Piece fans have seen many Devil Fruit users over the years, and several of these Devil Fruit powers would be perfect for Usopp.
Source：https://www.cbr.com/one-piece-usopp-potential-devil-fruits/
