The clip is credited to Taira Komori, a Japanese creator known for free sound effects that circulate widely in games, videos and soundboards. This roar is tagged for SCP, the collaborative horror universe built around contained monsters and anomalies, which explains its use in fan games and edits. As soundboards spread the effect, creators began using it outside SCP as a generic creature roar, often grouped with sounds like the FNAF Jumpscare Scream for horror montages. Its length and build make it a staple for reveals rather than quick stingers.
About this sound
A deep monster roar sound effect with a guttural growl and echo, commonly used for SCP horror games, jumpscares, boss reveals and creature scenes.
This is a long, layered monster roar lasting about six seconds, starting with a low guttural growl that builds into a full throaty bellow. The sound is deep and raspy, with a wet, animalistic edge and a slight echo that makes the creature feel large and close. It does not sound cartoonish, it sounds threatening and physical, like something huge opening its mouth in a dark room. Used on its own it instantly signals danger, turning a plain reveal, shadow or empty hallway into a moment where viewers expect something inhuman to appear.