Luigi is Mario's younger brother and a long-running Nintendo character, best known for his nervous, high-pitched voice and his habit of getting into trouble in the Mario games. Clips of his exaggerated shouts have long circulated online as reaction sounds, because they turn frustration into comedy without needing any dialogue. On soundboards and in short gaming videos, the angry scream works as a quick punchline for failure, making it easy to reuse across different edits and audiences.