Kim is a tomboyish drummer with a sarcastic, blunt, and dry personality. She is often seen as emotionless and expressionless, with a pessimistic and misanthropic outlook on life. She has a sharp, judging wit and can be crass, though she is also straightforward and honest. Deep down, she can be a fierce, caring, and decent person, but this side of her is rarely seen. Kim suffers from an inferiority complex and tends to view herself negatively. She grumbles often and dislikes people like Scott Pilgrim.