Atticus Finch is a fictional character in the novel To Kill a Mockingbird by Harper Lee. He is a lawyer and the father of two children, Scout and Jem. Atticus is known for his strong moral principles and commitment to justice, often standing up for what is right, even when it is unpopular. In the story, Atticus defends a black man, Tom Robinson, who is falsely accused of raping a white woman. Through this case, he teaches his children about empathy, integrity, and the importance of fighting against racial injustice in their community of Maycomb, Alabama.