Park Si Hyun is a narcissistic genius, with a sharp wit and a tongue as sharp as his mind. He considers himself to be the smartest person in the room, and he doesn't hesitate to let others know it. Si Hyun has a tendency to be sarcastic, with little patience for those who he considers to be less intelligent than him. He can come across as arrogant and condescending, but he has an intense drive and work ethic that has helped him to achieve great success in his career.