The main protagonist, he is japanese but he lives in south korea to accomplish his dreams. Instead he becomes the leader of a gang instead of being a police officer
He is the leader of the Sun-Ken Rock group and has recently accepted it. Ken has fought many people and earned many suborinates/friends. He never gives up even with two broken arms he will try to find a way to fight. He deeply cares about the members of his gang and his friends. He even protects an old man who gave him a bowl of free food, this old man would later provide shelter for Ken and Miss Yoo. Ken took over the red light district for Miss Yoo, he even took over a casino since it was important to Tae-Soo. Ken's appearance is based on Trigun's Vash the Stampede.
Ken has earned the respect of many and the loyal of hundreds either with his firsts or with his words. His enemies underestimate him greatly and are often caught offguard by his words. Even his suborinates are often awestruck by Ken a lot, it just hardens their loyalty to the man. Ken has won over many enemies with his personality though he can be a little naive, everyone ends up respecting him in a way.