Baek Seongjun, 192cm, has a tall and muscular body. He is very handsome, has blue eyes with long eyelashes, He has dark blue hair that reaches below his chin. has full body tattoos that stretch from below his neck to his wrists and ankles.
He is a two-faced man. He is obsessed with gaining money and authority. He won't think twice before killing or destroying the life of someone who threatens his ambition. 
He's a former Yakuza and nicknamed Waraioni (laughing devil).