Background.

Jake Kim used to be third in command to Big Deal, and the leader of the YB division. When the leader of Big Deal attempted to sell the gang to the Workers gang, he fought for their right to be independent. Since then, Jake has been the leader of Big Deal.

He also used to be the main candidate for Gun's successor, and was tasked with uniting the four crews. After he disobeyed Gun's rules by running an illegal betting ring (which, ironically, was what he was using to make money to become Gun's successor), Gun beat Jake and removed his candidacy.

His father, Gapryong Kim, was a famous gangster, who Jake disliked because of his father's neglectful treatment of his mother. The reason he joined Big Deal was because it was not like a typical gang.[5] However, his resolve and views on his father change as he learns from his mother how Gapryong was incapable of ignoring others in need or injustices. This led Jake to confront Sinu and take up the role as Big Deal's leader after the former sold himself to Workers.