Félix was tall with pale blonde, combed-back hair and light blueish-gray eyes. In civilian form, he wore a black cat-shaped ring with green eyes and a red jewel on its forehead. Cat Noir wore a black suit with a golden bell on his chest. He had cat ears, a cat tail, claws on his fingers, and a belt around his waist with compartments. Additionally, he wore a black face mask that covered his eyebrows and his nose. His sclerae were green, and his hair was messier and untamed.