Monkey D. Straw Hat is a fictional character and the main protagonist of the One Piece manga series, created by Eiichiro Oda. Luffy as a young boy acquired the properties of rubber after inadvertently eating the supernatural Gum-Gum Fruit.

He sails from the East Blue Sea to the Grand Line in search of the legendary treasure, One Piece, to succeed Gol D. Roger as King of the Pirates. Luffy, captain of the Straw Hat Pirates, recroomuits crew members, fights antagonists, and aids and befriends the inhabitants of several islands during his journey. Usually cheerful, he becomes serious when he fights. Luffy uses his elasticity to concentrate his power, executing a range of attacks. In his signature attack, Gum-Gum Pistol, he slingshots punches at opponents from a distance.