Characters with similar traits:
* The Phantom Tollbooth by Norton Juster: Milo is a curious boy who enters a fantastical world, encountering characters like Tock the Clock and The Mathemagician, who challenge his understanding of the world and teach him about logic and imagination.
* The Wonderful Wizard of Oz by L. Frank Baum: The Wizard is a powerful figure shrouded in mystery and fear, who ultimately turns out to be a harmless, albeit incompetent, old man.
* The Neverending Story by Michael Ende: The Nothing is a destructive force that threatens to consume the world of Fantasia. While not a character in the traditional sense, it represents the fear of the unknown and the power of imagination.
* The Hobbit by J.R.R. Tolkien: Gollum is a creature obsessed with the One Ring, driven by greed and loneliness. However, his loyalty to the Ring and his past experiences make him a complex and ultimately sympathetic character.
* The Lord of the Rings by J.R.R. Tolkien: Tom Bombadil is a mysterious and powerful being who lives in the Old Forest. He is known for his kindness and love of nature, and he is said to have a unique connection to the world.
* A Wrinkle in Time by Madeleine L'Engle: Mrs. Whatsit, Mrs. Who, and Mrs. Which are three celestial beings who help Meg Murry and her friends on their journey to rescue her father. They are enigmatic figures who seem to know more than they let on, but they are also kind and compassionate.
* The Secret Garden by Frances Hodgson Burnett: Dickon is a kind and gentle boy who lives in the wild, and he understands the language of nature. He helps Mary Lennox and Colin Craven to find joy and healing in the secret garden.
* The Chronicles of Narnia by C.S. Lewis: Aslan is the noble and benevolent lion who rules Narnia. He is a symbol of hope and redemption, and he teaches the Pevensie children about courage, sacrifice, and the power of faith.
Books with similar themes:
* The Catcher in the Rye by J.D. Salinger: Holden Caulfield is a troubled teenager who is alienated from the world around him. He is searching for authenticity and meaning, and he struggles to find his place in a society that he sees as phony and hypocritical.
* The Perks of Being a Wallflower by Stephen Chbosky: Charlie is a shy and introverted teenager who is trying to navigate the challenges of high school. He is struggling with grief, trauma, and social anxiety, and he finds solace in the friendship of an eccentric group of students.
* The Curious Incident of the Dog in the Night-Time by Mark Haddon: Christopher John Francis Boone is a 15-year-old boy with autism who is trying to understand the world around him. He is highly intelligent and has a unique perspective on life, but he struggles to connect with others and cope with his own emotions.
These are just a few examples of books with characters who are similar to Boo Radley in their mystery, their misunderstandings, and their ultimate goodness. These characters offer a window into the human condition and remind us that even those who seem strange or different can have hidden depths and valuable insights to offer.