Mr. 4 is best known for being an absurdly strong batter who swings a four-ton bat and wears the number prominently on both his shirt and equipment. He's built like a tank and operates as a team with his partner Miss Merry Christmas, who does most of the thinking while he follows her orders without question. Fans often note his dim-witted nature—he barely speaks and relies entirely on her direction.
His dog Lasso is the real wild card here. The animal ate the Inu Inu no Mi (the Mutt Mutt Fruit), which is pretty unusual since Lasso was originally a gun before consuming the Devil Fruit. Now he shoots explosive baseballs that Mr. 4 uses as ammunition, literally batting them at opponents like some kind of deranged baseball player.
Content compiled by AnimeList.moe from publicly available sources.
