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 hidden in them, and her outfit consists of a lavender uniform that exposes her navel, short black shorts, and long black thigh high stockings with black sandals. Her chest, neck and arms are covered with bite marks that result from people biting her to heal, and all of which are hidden by her uniform. As she is allied with Hebi, Karin begins to wear a pouch around her midsection, and later a black cloak. When allied with Akatsuki, Karin wears an Akatsuki cloak with a hood instead of a high collar. After the fight with Killer B, Karin briefly put her hair in a ponytail. She is seen wearing a black dress and black-rimmed glasses when it's decided that Taka will go to Konoha. Years after the Fourth Great Shinobi War, Karin began wearing a long sleeved white shirt with a purple tie and black cuffs on her wrists, black boots, and black shorts, and has also buzzed the left side of her head. Her body also apparently healed from all her bite marks. When Karin was still living in Kusagakure, she wore a mesh shirt and stockings, a purple skirt, a light brown short sleeved jacket with an orange stripe going across the chest, and black sandals. She also had the Kusagakure forehead protector on her forehead. As a child, Karin had short hair that reached her chin and wore a dark purple short sleeved shirt that had a brown collar, light brown pants, and brown sandals.