the antagonist
The antagonist is a character or force in a story that opposes the protagonist, who is the main character. This opposition creates conflict, which is essential for driving the plot forward. Antagonists can take many forms, including other characters, groups, or even abstract concepts like society or nature.
In literature and film, the antagonist often embodies traits that challenge the protagonist's goals or values. While they are typically seen as the "villain," not all antagonists are evil; some may have complex motivations or relatable goals. Their role is crucial in shaping the protagonist's journey and development.