Introduced near the end of Adrian Mole: The Wilderness Years, Jo-Jo is described as a tall, curvaceous, and stunningly beautiful Yoruba woman. She wears in hair in beaded plaits which rattle when she walks, and is a talented painter who specialises in portraits. In her early 20s, she comes to Britain to study Art at St. Martin's College, London. We later learn that Jo-Jo is in fact the daughter of a tribal chief, that her family are considerably wealthy. In the short story Mole Cooks His Goose, set the following Christmas, Adrian refers to Jo-Jo as his fiancee.