Hatsune Miku is a virtual idol created by Crypton Future Media using Yamaha Corporation's Vocaloid software. She was introduced in August 2007 and has since become one of the most iconic and recognizable figures in the world of Vocaloid music. Vocaloid is a singing synthesizer technology that allows users to create songs by typing in lyrics and melody, and Hatsune Miku is characterized by her youthful appearance, long turquoise twin-tails, and her distinctive voice.

The name "Hatsune Miku" translates to "First Sound of the Future" in Japanese. She has inspired a massive fanbase globally and has been featured in numerous music videos, concerts, and collaborative projects.

The Piapro Characters, developed by Crypton Future Media, comprise a diverse group of virtual idols within the Vocaloid franchise. Notable members include Hatsune Miku, the iconic turquoise-haired virtual idol with a youthful voice; Kagamine Rin and Len, the energetic and optimistic twin duo released in December 2007; Megurine Luka, introduced in January 2009, known for her mature appearance and natural singing style; and the early Vocaloid characters Kaito, released in February 2006, and Meiko, introduced in November 2004, both possessing more traditional designs.

Together, these Piapro Characters have become prominent figures in the world of virtual idols, contributing to the collaborative and creative spirit of the Vocaloid community.