The sound comes from Totally Accurate Battle Simulator, the physics battle game where players place wobbly units and watch them fight, and the clubber is one of its early tribal fighters armed with a simple club. Its short attack vocal was lifted from gameplay and shared on soundboards, where short game noises are easy to reuse in edits and streams. It remains useful because it is instantly recognisable as a chaotic battle shout, yet brief enough to drop into almost any fight scene without distracting from the action.