Lost Vivaldi is a supporting character in the anime Classic★Stars, which is part of a music-themed mixed-media project featuring reimagined classical musicians. He serves as the sub-vocalist and drummer of the mysterious band named Dis=Cord. Physically, he is an adult male with blue eyes and short maroon hair that reaches his ears. His personality is defined by a cool, intelligent, and calm demeanor. He rarely speaks and maintains a quiet, serious attitude at all times. Lost Vivaldi possesses a strong sense of pride and is reluctant to display any sign of weakness. His motivations are rooted in this pride and his commitment to his role within Dis=Cord. In the story, he appears as a member of that band, contributing to the musical and narrative conflicts of the series. No detailed information is available about his background before the events of the anime, his specific interpersonal relationships with other characters, his character development over the course of the series, or any supernatural or combat abilities beyond his musical talents as a drummer and vocalist.