He is a fighter of legendary status and the personal bodyguard of the Crystal Choi. He is also one of the "10 Geniuses". He is usually seen wearing full-rimmed glasses to hide the scar stretching between his eyes. He is usually seen as a highly composed man who is quite dedicated to his job as a bodyguard. He maintains a stern-looking expression on his face that exhibits a smile only when amused, usually by someone's fighting potential. He has bad hand writing.