A prolagonist is a term used in literature and storytelling to refer to a character who serves as a primary protagonist but also embodies qualities of a supporting character. They often drive the narrative forward while also enhancing the development of other characters and the overall plot. This dual role can add depth to the story, as prolagonists may face personal challenges while facilitating the journeys of more central protagonists. The term is less commonly used than "protagonist" and may not be widely recognized in all literary discussions.