Listed online as Dweller Idle (Walter), this clip circulates as a short soundboard sound rather than a widely documented excerpt from a film or game, so its exact source is not clearly established. Its name points to an idle moment for a figure called Walter, and that ambiguity suits horror editing, where an unseen presence matters more than a named character. Short, atmospheric clips like this spread easily between creators, and this one endures because it can set a tense mood in seconds without dialogue, music, or a full scene.