Grannie Jojo is Richard's mother and the grandmother of Gumball, Darwin, and Anais. She is slightly lazy and ill-mannered, making rude remarks to Nicole at times. Nicole has a hatred of Grannie Jojo, but Richard and the rest of the kids love her.
Grannie Jojo bears a resemblance to Richard Watterson, being a pink rabbit, but she is noticeably shorter. She wears a beige blouse with white polka-dots, and black shoes. She also wears cat-eye sunglasses.