- Not to be confused with Mrs. Johnson.
Mary Johnson is a member of the Johnson family. She lives in the house next to Grampu's and debuted in the Oobi Babies episode Bitter Sitter, in which she is hired to babysit the kids. Mary reappears in the Neighbors! episode of Oobi's New House along with her husband.
Mary Johnson has peach-colored skin and yellow eyes. Her hair is long and made of string.