The Luffy cosplay will be a sure win! Monkey D. Luffy, also known as ” Straw Hat Luffy” and commonly as “Straw Hat”, is the main protagonist of the manga and anime, One Piece. The cosplay contest had several categories: retro (kind of a vague category), Anime, Sci-fi, comic book, fantasy, and ensemble. In fact, mortal kombat costume the cosplay is so accurate that it’s hard to believe that Horikoshi’s characters are simply meant to be works of fiction.