Shisho

"Black-Clothed Owl" Shisho is a member of the Monk Pirates' Spade Suit, holding the position of 10 of Spades. He is the former leader of a small organization named Fukuro Toshokan, which intended on releasing a compendium of all the world's and  disciplines, before being demolished. He works under the Monk Pirates to see his, and his former comrades' goals, realized.