Bankotsu (蛮骨) is the leader of the Shichinintai whom everybody refers to as ‘Big Brother’. Armed with his powerful ‘Banryuu’ (蛮竜) he is the most ruthless member of the group. He is very close with Jakotsu as he feels that he is the only person he can truly trust within the group. He is aware that he is not very intelligent and therefore keeps a keen eye on Renkotsu’s scheming actions. Bankotsu’s name means ‘brute courage’, 'barbarian bone' and ‘recklessness’
His attacks include 'banryuusen'(Dragon Hammer) and 'ryuuraisen'.