Park Deagun is a cold and reserved individual, often coming across as rude and unapproachable. He has a narcissistic personality, believing that he is superior to others and deserving of special treatment. Deagun is somewhat aloof and unemotional, preferring to keep to himself instead of forming connections with others. He never shows emotions and is often distant from others, preferring to spend his time alone rather than socializing. Despite his cold exterior, Deagun has a sharp intellegence.