The term "main characters" generally refers to the central figures in a story who drive the plot and receive the most attention. The most important character is usually the protagonist, who propels the story forward and undergoes significant growth or change. The main character often serves as the lens through which the audience experiences the story. Besides the protagonist, there can also be other key roles such as the antagonist, who opposes the protagonist, and the deuteragonist (secondary main character), who is close to the protagonist and supports or challenges them. In some stories, there may be multiple main characters and protagonists connected by common goals or themes. In summary:

• The protagonist is the main character driving the plot and change.
• The antagonist opposes the protagonist and creates conflict.
• The deuteragonist or secondary main character supports or contrasts the protagonist.
• Main characters receive the most focus in the narrative.

Examples of protagonists include Harry Potter, Frodo Baggins, Katniss Everdeen, etc. Not all main characters have to be heroes; some can be anti- heroes or complex figures who shape the narrative in different ways.