Hi, I’m Arthur Radley, but some people call me Boo. There are many rumors about me: that I’m a phantom, that I peep in windows at night, and eat live animals. Ever since I was part of a “gang” as a child, rumors have started that I’m dead or a ghost. People don’t really know that I was forced to stay inside, and am now extremely shy and awkward because of that. I am lonely, and the only contact I had with the outside world before saving the kids from Bob Ewell was when I gave them presents in a knothole in an oak tree. My older brother is Nathan Radley, who took over in my house as a father figure once our dad died.

Dr. Reynolds is the Maycomb doctor. "Had brought Jem and me into the world, had led us through every childhood disease known to man including the time Jem fell out of the tree house, and he had never lost our friendship. Dr. Reynolds said that if we were boil-prone things would have been different...” He is well known to Jem and Scout. He has a strong bond with the Finches.