A slim, fair skinned young woman with waist-length fair hair styled in a hime cut and light coloured eyes, Koko has white hair with light blue eyes and pale skin in the anime. When she was younger she maintained her hair at chin length and two years later has again cut it to that length. She is very similar in appearance to her brother Kasper, although they are not twins. Koko is usually well dressed, favouring business suits or similar attire, with or without neckties. She also wears a white coat with a feather-like collar. Because she has a tendency to burn when out in the sun, Koko usually wears a broad-brimmed straw hat when outdoors for an extended period of time.