User blog comment:Loner89/is dracule mihawk from wano country?/@comment-3242083-20120205153549

Just because it somehow fits, here is a sketch of a character who seems to be not introduced yet - with a Samurai sword and hairstyle:

http://desmond.imageshack.us/Himg864/scaled.php?server=864&filename=samuraisketch.gif&res=medium

From color walk 2, it was shown together with the early design for Hancock and Brogy