SCP-096, often called the Shy Guy, comes from the SCP Foundation collaborative horror writing project and became widely known through games like SCP - Containment Breach. In the lore the creature stays docile until its face is viewed, then screams and gives chase, which is why recordings of that first scream are shared separately as clean sound effects. Clips like this one circulated on soundboards and in fan edits, roleplay servers and horror compilations, where the short isolated shriek remains instantly recognisable to SCP fans.