Put it at the final beat of a scare edit, after a slow build and just before the reveal. Follow it with FNAF Jumpscare Scream for a second hit, then cut straight to a reaction shot.
About this sound
This is a short, sharp jumpscare burst built around Circus Baby, lasting under two seconds and hitting with a sudden, distorted scream-like rush. It feels startling and unsettling, the kind of jolt that makes a quiet scene snap into panic. It comes from the Circus Baby jumpscare moment, so it carries that animatronic horror tension in a single hit.