Put this clip at the climax of a FNAF edit, after a warning from the Danger Alarm Meme Sound, then follow it with the FNAF Jumpscare Scream to carry the scare through the reveal.
About this sound
This 13-second clip is Golden Freddy at his most furious, a burst of distorted animatronic screams, harsh static and low rumbling that swings from tense quiet to sudden loud peaks without clear words. It feels aggressive, unsettling and startling, like the character is glitching out of control. It comes from Five Nights at Freddy's, the horror game series created by Scott Cawthon.