Usada Pekora is a rabbit-themed VTuber from Hololive, a Japanese virtual talent agency, and she is known for loud, playful reactions during gaming and chatting streams. Short clips of her voice have circulated widely in fan edits, memes, and soundboards, where this shocked exclamation is reused as a quick reaction sound. Because it is short, clear, and instantly expressive, creators keep returning to it for surprise moments, and its association with Pekora's energetic personality helps it stay recognisable long after the original stream.