Kagamine Len is a virtual singer created by Crypton Future Media. He is one half of the Kagamine twins, along with his sister Rin. Len is known for his energetic and cheerful personality, as well as his powerful vocals. He is often used in songs that are upbeat and energetic, such as "SUPERHERO" and "Ride On". Len has also been used in songs that are more emotional and heartfelt, such as "Hunting Night" and "反射湖".