Luka Megurine is a fictional character from the VOCALOID series, which is a line of singing synthesizer software developed by Crypton Future Media. She is the third release in Crypton's Character Vocal Series and is known for her distinctive mature voice. Luka can sing in both Japanese and English, making her versatile in music production. Her character design features long pink hair, a futuristic outfit, and a calm demeanor. Luka's role in the series is to serve as a virtual idol, allowing users to create and share music using her voice.