User blog comment:Sono kaizoku/new shichibukai/@comment-1595565-20100822214053

@StrawHatKyra Puzzle is filler, so he couldn't be one since he doesn't exist in the manga. Shanks being a shichibukai would completely throw off the balance of power. The only logical ones I can see right now are Buggy, Bonney, and maybe Law or another supernova.