Usada Pekora is a Japanese virtual YouTuber with Hololive, known for her rabbit-themed persona and playful, chaotic streaming style. Her distinctive kyakya laugh became a fan favourite in stream clips, where viewers quoted and reused it to capture her mischievous energy. As those clips circulated on video platforms and social media, the laugh turned into a shorthand sound for silly schemes and over-the-top reactions. It remains popular because it is instantly recognisable to VTuber fans and works even for viewers who have never watched a full stream.