Not Betty

Not Betty is a waitress who works at the Diner. She appears in the episode "Missing Identity."

Description
Not Betty is a darkish orange fish with bushy, red-orange hair. She wears a lime green shirt that has a yellow collar. She also wears a lime green hat with a light yellow rim, black glasses, and a name tag. If one looks at the top left of her hair, it is shown that she has a blue pen sticking out of it.

Role in episode
She is seen working at the Diner late at night when a customer asks her for a pen. then tells his story about how he lost his identity. After he finishes the story, "Betty" tells SpongeBob he managed to kill eleven minutes. SpongeBob looks at her name tag and calls her "Betty." She then tells him that this is not her name, but she is wearing a woman named Betty's uniform as hers is in the dry-cleaners.

Trivia

 * When "Betty" tells SpongeBob that he successfully managed to waste eleven minutes, she references the time of an average  episode.