Mozart is a thin woman with very long dark maroon hair, which is partitioned into two large horn-shaped braids to the left and right of her head which resemble a jester's hat; parts of these braids are pink. She has purple eyes. She wears a pink collared shirt with horizontal purple stripes, a maroon skirt, striped tights, and a light purple cape.
Mozart is likely named after Mozartkugel (meaning "Mozart ball" in German), a small, round sugar confection made of pistachio marzipan and nougat that is covered with dark chocolate. This fits with the food-themed themes of the Charlotte Family.
She may also be named after the famous Austrian composer Wolfgang Amadeus Mozart, fitting with the music-themed names of some Charlotte Family members.