My favarite charactor is Monkey D. Luffy  
One Piece revolves around Luffy's exploits in searching for the world's ultimate treasure known as the One Piece and becoming the next Pirate King. Throughout these adventures, he meets many others who share similar goals, organizing a diverse crew known as the Straw Hat Pirates. As Luffy's exploits are revealed to the World Government, he becomes one of the strongest pirates and protects his crew from villains who wish to harm him and his friends. Luffy is depicted as carefree when at ease, but is quick to become serious in a fight. Luffy is able to concentrate his strength and power from his body to use attacks, the most prominent being his signature Gum-Gum Pistol, in which Luffy launches a punch attack.