Karin has a fluctuating personality; she will appear tough and in control at times, to the point of being violent and critical, and at other times will appear highly flirtatious. Karin has crimson eyes, fair skin, and the characteristic red hair of the Uzumaki clan which she wears in an unusual hairstyle: her hair is short and spiky on the right side, while longer and straight on the left side. She wears brown narrow glasses, which have a serrated blade in them. Birthday is June 20. She is 17.