Place this clip at the start of a monster approach in your edit, then follow it with the FNAF jumpscare scream for the attack moment, and finish with the Roblox Oof as the final hit after the reveal.
About this sound
This is a six-second roar from Figure, the tall blind entity in Roblox Doors, capturing the guttural noise he makes while wandering and hunting by sound. It feels tense and threatening, because that low growl means he is close even when you cannot see him coming toward you.