SCP-049, also known as the Plague Doctor, is one of the most recognisable entities from the SCP Foundation universe and a central antagonist in the indie horror game SCP: Containment Breach. The character speaks in a calm, courteous tone even while pursuing the player, which made his greeting a memorable moment for players and streamers. Clips of the line spread through horror compilations, SCP roleplay videos and soundboards, where it remains popular because the polite delivery instantly signals danger without needing any visual context.