3rd Grade Female Aardvark is an unnamed third grader who made her first appearance in the opening to the episode "D.W., Dancing Queen". She appeared in the imaginary version of Arthur who imagined some of his friends as teachers.
She spoke when Brain activated a machine, which transferred information into her mind and she was able to successfully answer the question. It's unknown if she is actually a student at Lakewood Elementary School as she has not reappeared.
3rd Grade Female Aardvark is an aardvark with a cream complexion. She wears a white collared shirt, tanned colored overalls with an orange belt and pockets, and brown shoes. She also has blonde hair.