Rupert charging up circulated as a TikTok sound, shared as a short standalone clip detached from any clear original scene. Its spread followed the platform pattern for power up audio, where creators reuse the same rising yell to parody anime transformations and Dragon Ball style charging scenes. Because the build is generic enough to fit almost any subject, it moved quickly into gaming, pet and fitness edits. It remains used because the delayed payoff lets editors control timing, stretching anticipation before a reveal, a fail or an unexpectedly small result.