Place it just before the main entrance in an edit, then follow it with Dun Dun Dun for the reveal and Anime Wow for the reaction that follows. That order keeps the build-up, the moment itself, and the response separate, giving each beat room to land.
About this sound
The Approaching clip is a sound built around the idea of something drawing near. It gives a tense, anticipatory feeling, as if a moment is about to arrive and change everything. The wait it creates makes a listener feel on edge, like a warning before a big reveal, and the clip comes from an animatic.