Hag fish

The hag fish is an elderly fish who appears in "Glove World R.I.P."

Description
She has wrinkly bluish-teal skin with light purple lips and 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
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 and then knocks out SpongeBob.