Kagamine Len (鏡音レン), codenamed CV02, is a Japanese VOCALOID developed and distributed by Crypton Future Media, Inc., and were initially released in December 2007 for the VOCALOID2 engine. He is part of the Character Vocal Series and is a Character Voice VOCALOID. There has since been numerous installments such as additional voice banks dubbed 'Append' as well an update to the VOCALOID4 engine and an English vocal. He, along with Kagamine Rin, are the second set of vocals for Crypton's VOCALOID Character Vocal Series. Their voices are provided by the Japanese female voice actress, stage actress and singer, Asami Shimoda (下田麻美 Shimoda Asami).