Who are the protagonist and antagonist for the bully by Paul Langan?

In "The Bully" by Paul Langan, the protagonist is Darrell Mercer, a young boy who faces the challenges of bullying and seeks to stand up for himself and his friends. The antagonist is Chad, the school bully, who embodies aggression and intimidation, making Darrell's life difficult. The story explores themes of courage, friendship, and the impact of bullying on young lives.