Margaret Simon is a fictional character from the book series "The Margaret Series" written by Judy Blume. She is a young girl navigating the challenges of adolescence, including friendships, family dynamics, and the complexities of growing up. The story explores her journey as she learns about her identity and beliefs. In the series, Margaret is portrayed as relatable and curious, often questioning her religious background and seeking her own path. The books address themes of self-discovery, peer pressure, and the importance of communication, making them resonate with readers of all ages.