Pierro is the First of the Fatui Harbingers in Genshin Impact, the action role-playing game from HoYoverse set partly in Snezhnaya. The name Ronova belongs to the game's wider lore, and fans clipped Pierro shouting it because the raw delivery stood out from calmer villain dialogue. Shared through Genshin soundboards and short-form edits, it became a shorthand for dramatic despair and impending doom. It remains popular because the scream is instantly recognisable even without context, and it fits any moment that needs sudden, theatrical escalation.