Cid Kagenou is a slim young man with short dark hair, with facial features often described as generic and frail. Attending the Midgar Academy, he is required to wear a uniform consisting of a dress shirt, trousers, a blazer jacket, a tie, and a pair of loafers.

Under his Shadow guise, Cid adorns a full-body slime suit, gloves, and boots along with a hooded trenchcoat, and a domino mask. This attire is dyed jet black with golden patterns.