Len Kagamine is a prominent character in the Vocaloid universe, known for his youthful and energetic voice. He is often depicted as a teenage boy with short blonde hair and blue eyes, wearing a futuristic outfit. Len is one of the Vocaloid voice banks created by Crypton Future Media, designed to sing by synthesizing voice samples. He is often paired with his female counterpart, Rin Kagamine, and together, they are depicted as twins or mirror images. Len plays a significant role in the Vocaloid community, inspiring countless songs and creative works.