Ran Haitani is a violent and sadistic member of the Bonten criminal organization. He is manipulative, possessive, and rude. He has a big ego and likes to tease and mock people. He is also very flirtatious and cruel. He fights ruthlessly with weapons, and he kills people without any morals. He likes casual and superficial contacts. He has a younger brother named Rindou, and they were abandoned by their parents at a young age. They also have half a spider on chest tattoo and serpent on their back.