Aunt May was played by Peggy Mahon. She is Lydia's aunt by marriage on her father's side of the family, being married to Clyde.
She has blonde hair, which she wears in a bun, and wears eyeglasses. She has a pink buttoned shirt and a blue jeans. She is often shown knitting.
Aunt May appears in three episodes of the animated series. She is first introduced in Cousin B.J., and has a larger role in The Farmer in the Smell. She also appears in Ghost to Ghost, though she doesn't speak.