A new Apple TV "Peanuts" movie is shedding light on a previously unknown aspect of Charlie Brown's life. The movie reveals the identity of Charlie Brown's longtime pen pal, a character who has been a mystery since the comic strip debuted in 1950. The pen pal, a young girl named Mia, is from London and of South Asian descent.

She uses a wheelchair, adding a new layer to the "Peanuts" universe. Further details about Mia and her relationship with Charlie Brown are available from the source, providing a deeper look into this new development in the beloved comic strip series.