The clip takes its name from its spoken Italian line, which translates as asking who this Marlon is, and it circulates online as a short reaction sound rather than as part of a widely documented scene or song. Because the name Marlon is left unexplained, listeners can apply it to almost any unfamiliar person, and that flexibility helps it work across comedy edits, streams and social videos. Its appeal lies in the tone rather than a famous source: a brief, puzzled question that sounds funnier the more confidently the newcomer behaves.