The exact recording behind the Insomnia jumpscare sound is undocumented, so no confirmed source game or artist can be named. What is clear from its published copy is that it belongs to the FNAF jumpscare tradition: the sudden-scream scare that became the signature of Five Nights at Freddy's videos and fan edits. Sounds like this spread through gaming reaction channels and meme edits, where a quick shock cut is worth more than any dialogue. Its short length makes it easy to reuse, which is why variants of the FNAF scare noise, like the FNAF Jumpscare Scream, keep circulating years later.