Mukotsu

Mukotsu ( 霧骨 むこつ , "Misty/Foggy Skill") was a member of the Shichinintai. He was a master of poisons of sorts and utilized a number of different poisons and gases to attack his enemies. Due to his elderly appearance, he was considered to be the oldest of the Shichinintai; he was also the second weakest member.