Mimzy is a short and plump demon with pale-lilac skin and platinum-blonde hair, which has been kept into a 1920s-style bob cut. Her eyes have cerise-colored pupils, black sclera, and thick lashes colored in a very dark shade of magenta. She has sharp pale yellow teeth inside her mouth and dark magenta lips, as well as darker-colored blush. Her nose is also a beak shape. Mimzy wears a bright pink 1920s-style flapper dress with pale yellow and black detailing, resembling film tape.