In a story, the adversary of the protagonist is the

In a story, the adversary of the protagonist is the antagonist. The protagonist is the main character who drives the story forward, and the antagonist is the character who opposes the protagonist and creates conflict in the story. The antagonist can be a person, an animal, a force of nature, or even an idea. Their purpose is to challenge the protagonist and prevent them from achieving their goals. The antagonist is an essential element in a story as they create tension, drama, and suspense.