Boo Radley is certainly the most unusual character in To Kill a Mockingbird, but there are a few other eccentric citizens who can more easily be found on the streets of Maycomb.
BOO RADLEY. Boo is never seen until the final chapters of the story. He is a recluse, hiding in the Radley house until darkness falls, when he makes his unseen rounds of the neighborhood. Gossip runs rampant about Boo around town--he eats squirrels, poisons pecans, and peeks in windows. But in the end, he shows an unexpected heroic side when he comes to the aid of his neighbors.
His face was as white as his hands... his cheeks were thin to hollowness... his gray eyes were so colorless I thought he was blind... His hair was dead and thin...
DOLPHUS RAYMOND. A wealthy white man who lives with his black mistress, Dolphus ranks second only to Boo as a subject of town gossip. He is misunderstood and he likes it that way. He deliberately weaves about the town, pretending to be drunk as he sips from a straw in a bottle hidden by a paper sack.
As Mr. Dolphus Raymond was an evil man, I accepted his invitation reluctantly... I had a feeling that I shouldn't be here listening to this sinful man... but he was fascinating.
MISSES TUTTI & FRUTTI. Only mentioned once in the story (in Chapter 27), the sisters Sarah and Frances Barber were known as "Tutti and Frutti" to those in Maycomb. Perhaps they were the oddest couple in Maycomb: They were Republicans, Northern Alabamans, unmarried, deaf, and they had the only house with a cellar in town.
... why they wanted a cellar, nobody knew, but they wanted one and they dug one, and they spent the rest of their lives chasing generations of children out of it.