A supporting character is a character in a story who plays a secondary role to the main character, often referred to as the protagonist. These characters help to develop the plot and provide depth to the story by interacting with the protagonist and influencing their journey. Supporting characters can include friends, family members, mentors, or even rivals. While they may not be the focus of the narrative, supporting characters are essential for creating a rich and engaging story. They often bring unique perspectives, motivations, and conflicts that enhance the overall narrative, making the protagonist's journey more relatable and dynamic. Examples of supporting characters can be found in various forms of media, including literature, film, and theater.