Valley Mercer is a girl in Ms. Hoover's second grade class.
Valley is regularly seen in background, mostly at Springfield Elementary School and sometimes in various places around Springfield.
She appears to get along with other kids in her class and throughout school. She bears a strong resemblance to the White-Haired Girl, who apparently was replaced by this character. She hasn't spoken as of yet.
Valley often wears a green shirt, blue pants, and green shoes. She notably wears a necklace around her neck, which contains a single pearl attached to her necklace. She also has brown hair, though in past episodes she's seen with blond hair.
- Valley can be mistaken for the White-Haired Girl and the Long-haired girl.
- In some earlier episodes, she's been seen not wearing her necklace.
- Valley's name was revealed in "Woo-hoo Dunnit?".