What are the main characters in AL Capone does my shirts?

In "Al Capone Does My Shirts" by Gennifer Choldenko, the main characters include Moose Flanagan, a 12-year-old boy who struggles with the challenges of family life and his sister's autism. Other significant characters are Natalie, Moose's sister, who is on the autism spectrum, and their parents, particularly Moose's father, who works as a guard at Alcatraz. The story also features Al Capone, the infamous gangster, who serves as a backdrop to Moose's experiences on Alcatraz Island. Together, these characters navigate themes of family, friendship, and the complexities of growing up.