This sound is best understood as a general horror creature effect rather than a quote tied to one famous character or scene. Clips like this spread through gaming edits, scary memes and short-form videos because they instantly signal danger, corruption or a boss-level reveal. Its long, low growl makes it useful for slower reveals, unlike a sharp scream such as a FNAF Jumpscare Scream. Creators keep using demonic roars because they are easy to layer under dark visuals, red filters and sudden camera pushes.