Piapro Characters is a series that revolves around a group of virtual singers developed by Crypton Future Media. These characters are part of the Vocaloid software, which allows users to synthesize songs using pre-recorded voices. The most famous among them is Hatsune Miku, who has become a cultural icon worldwide. The series includes various characters, each with distinct personality traits and vocal characteristics, often featured in music videos, concerts, and multimedia projects.