The sound comes from Spider-Man: Into the Spider-Verse from 2018, where Aaron Davis becomes the Prowler, the clawed enforcer working for Kingpin. Composer Daniel Pemberton gave the character a distorted electronic theme that signals danger before he fully appears on screen. Clips of that theme spread online as a reaction and jumpscare sound, with louder reuploads pushing the effect even further. Its mix of superhero recognition and pure volume keeps it popular for villain reveals, fake threats and overdramatic entrances in edits and streams.