Final answer:
Bob Ewell is the antagonist in 'To Kill a Mockingbird' due to his racism, lies, and threats, which catalyze the central conflict and highlight themes of injustice.
Step-by-step explanation:
In To Kill a Mockingbird, Bob Ewell stands out as the main antagonist due to his c. racism, false accusations, and menacing actions. Bob Ewell's character is depicted as bitterly racist and vengeful, particularly towards Tom Robinson, whom he falsely accuses of raping his daughter. This accusation fuels the central conflict of the novel, putting Atticus Finch and his family in harm's way. Ewell's actions are driven by deep-seated prejudices and a desire to maintain his own reputation at the expense of others' lives. As such, he embodies the opposite of kindness, bravery, commitment to truth, and fairness. His role as an antagonist is critical to conveying the themes of racial injustice and moral courage within the novel.