Dousetsu Inuyama

犬山道節, 犬山道節忠與
Bears the ch bead of loyalty his birthmark is on his left shoulder. His father was killed by rival lord Uesugi Sadamasa making him hellbent on revenge for the sake of his clan. In addition he is Hamajis halfbrother. His mother was assassinated by Hamajis biological mother his fathers second concubine who became jealous due to her inability to bear a male heir. Particularly during the beginning of the series Dsetsu is ruthless selfish and a reckless loose cannon in the group. Source: Wikipedia