Baku is known as a genius gambler, he is a legend among the underworld.

During gambles, there are many instances where he intimidates and tosses around his opponents as if he is eating them. And even outside of gambling, he is prone to danger and likes to take risks in everything. His true feelings toward people are unknown and a mystery. However, he seems to treat people based on what he sees through his judgements. He shows his disgust toward people like Kaji's mother who selfishly trample on others, but on the other hand he shows kindness to people like Marco who have been living in solitude. Baku considers his friends and allies very important.