A "Supporting Actor" is a performer in film, television, or theater who plays a secondary role to the main character, known as the lead. These actors contribute significantly to the story by enhancing the plot and providing depth to the narrative. Their performances often help to develop the lead character and can be crucial for the overall success of the production. Supporting actors can receive recognition for their work through awards, such as the Academy Award for Best Supporting Actor. This category highlights the importance of these roles, showcasing how they can be just as impactful as leading roles in engaging the audience and driving the story forward.