Arthur Radley

Arthur Radley, also commonly referred to as Boo Radley, was a major character in Harper Lee's novel To kill a mockingbird as well as it's 1962 film-adaptation of the same name.

Personality
Arthur was a loner who rarely left his house or even allowed himself to be seen, presumably because of the emotional damage that was inflicted upon him by his father when he was a child. Since the two children Jeremy and Jean Louis(Scout)Finch were usually the only ones to come close to his house, they were the only ones he had some sort of connection with. Still, he was too timid to introduce himself, so he simply chose to leave gifts for them as an act of kindness. It is implied that he followed the childrens emotional journey from a distance throughout the course of the tale, thus strengthening his fondness for them.

This emotional bond was put to test when he was forced to rescue Scout and Jeremy from the vengeful Bob Ewell towards the end of the story. Even though his timidness prevents him from uttering a single word, even when Scout thanks him and accompanies him home, she starts to truly understand him and the two departs as friends.