The answer that fits the blank provided above is BROTHER. This question is based on Harper Lee's novel "To Kill a Mockingbird". So when Atticus returns home for the first time after the trial, Aunt Alexandra empathized for him and called him Brother. Hope this helps.
im sorry i am so late to this, cant believe nobody has answered this easy question! probably katniss, because of all the people she inspired. in the beginning of the books she was seen as a weak looking girl who volunteered for her sister. but in the second and third books, you can see how much she is looked up to and idolized.