Saffy is a popular character from the children's book series called Saffy's Angel by Hilary McKay. She is known for her unique personality, intelligence, and creativity. Saffy is a member of the Casson family, which is central to the story, and her adventures often revolve around her relationships with her family and friends. In the series, Saffy is depicted as a thoughtful and imaginative girl who faces various challenges. Her journey includes themes of self-discovery, friendship, and the importance of family. The books are well-loved for their humor and relatable characters, making Saffy a memorable figure in children's literature.