Ciel is a short, slight teenage boy with grey-tinged, blue-black hair and rich peacock-blue eyes. Ciel has a well-proportioned body: His arms and legs are thin, his shoulders slim, and his waist narrow. On the left side of his body is the mark of the "noble beast", which he was branded with during his time as a slave in a cult. Since then, he wears earrings.
Ciel typically dresses in a way that suits his noble standing. He almost always wears a black eye-patch made of gauze with a single cord 