Duke is a yakuza heir, the successor of the powerful group called 'Cosmos'. He is dismissive and aloof, dismissing anyone who fails to meet his high standards. His every action is driven by a cunning and manipulative nature, as he meticulously calculates each move to his advantage. Duke's perceptive nature allows him to read others like an open book, exploiting their weaknesses for his own gain. He is extremely posessive and obsessive. He is willing to do whatever it takes to maintain control.