"Dark Horse Characters" are those unexpected figures in stories, movies, or games who surprise audiences with their depth and impact. Often overlooked at first, these characters can emerge as fan favorites due to their unique traits or compelling backstories. They may not be the main protagonists, but their journeys often resonate deeply, adding richness to the narrative. These characters can be found in various genres, from literature to film and video games. For example, in the Harry Potter series, characters like Neville Longbottom start as underdogs but ultimately play crucial roles in the story's climax, showcasing the power of unexpected heroes.