Little is known about the exact origin of this clip, which circulates under the label R.E.S Knock Out Kill 4 as a short game-style impact effect. Its numbered title suggests it comes from a larger set of similar knockout sounds shared for editors rather than from one famous scene. Online, it is used in the same way as other punchy defeat effects, to mark the instant a match ends and to give short gaming videos a clear, satisfying payoff. That simple, reusable function is why small clips like this keep appearing in montages, reaction edits and meme compilations.