The effect comes from Slugterra, an animated television series centered on Eli Shane and battles fought with living slugs launched from blasters. In the series, fired slugs can metamorphose into powerful forms, with energetic audio helping sell their speed and transformation. Clips of these sequences have remained recognizable among fans through episode edits, compilations and animated recreations. The effect is also used like a stylized pew pew sound in unrelated action videos because it combines a launch cue with a compact transformation payoff.