Yamamoto is a mysterious man, some say he has all existing Hakis and knows how to control them others have said he has a monstrous Akuma, but no one yet knows the right. It is a generally nice and funny man. But seriously when is an unstoppable killing machine and its destructive power is unrivaled. Generally it is always peaceful even with others Goshin but never deals with these even in times of "peace" or encounters always keeping as far away from these. After all, is a man respected by the Navy, Government either by pirates at least decent. It's probably the Pirate