Luigi is Mario's younger brother in Nintendo's long-running Mario games, a character known for being more nervous and reluctant than his heroic sibling. That nervous energy made his panicked scream a natural fit for meme culture, where short game sounds are clipped, shared and reused as reaction audio. On soundboards and in short videos, the scream is now used far beyond its original game context, becoming shorthand for sudden fear or comic failure. Its familiarity keeps it instantly readable, which is why creators still reach for it for jumpscares and fails.