Luigi is Mario's younger, taller brother, introduced by Nintendo in the 1983 arcade game Mario Bros, and his scared reactions have been a running joke throughout the Mario series ever since. Fans online take his game screams and remix them, pitching them down and boosting the volume for comic effect. This louder, deeper version circulates in meme edits and gaming videos alongside sounds like the Mario jump, usually as a punchline when a character panics, falls or fails in an exaggerated way.