Hatsune Miku is the turquoise-haired Vocaloid singer who became an internet icon through fan-made songs, videos and illustrations. The Miku Miku Beam line grew out of that fan culture as a cute, exaggerated attack call, shared in edits, animations and short-form videos where Miku suddenly strikes a pose. Its bright delivery and instant recognisability made it a reusable reaction sound online, and creators still use it to signal playful power, fandom and anime humour in new memes.