Hollows are the corrupted, mask-wearing spirits that serve as early antagonists in Bleach, the long-running anime and manga series created by Tite Kubo, and their inhuman cries are part of what makes them feel threatening on screen. Short clips of those sounds have circulated on fan soundboards and in anime edits for years, where editors reuse them outside their original scenes. The sound endures because it is instantly recognisable to Bleach fans and instantly unsettling to everyone else, making it a shorthand for danger, darkness and the supernatural.