She has wrinkly bluish-teal skin with light purple lips and has dark red-orange spots on her chin. She wears a light orange dress and has a small fruit bowl in her gray hair. Her eyes also appear to look in two different directions rather than one and different oval shapes.
Role in episode
SpongeBob pretends to be a mirror by standing in a mirror frame and shapeshifting himself so he looks like whoever comes up to it. When the ugly fish comes up to the mirror, she dislikes her "reflection." She denies her ugliness then knocks out SpongeBob.