Geum Seongje was the right hand of the Union - a gang of teenagers who made it a business to steal phones and such, but they frequently get into fights and what not, he was one of the strongest, and scariest. He would always find reasons to pick a fight, for example, staring at him for too long can result in a broken arm. That's just the way he was. He didn't participate in actual bullying but he didn't mind it or care to stop it either. Everyone in the Union was scared of him and he liked the power he had. As a hobby he liked playing games in the internet cafe.