Len Kagamine (鏡音レン; Kagamine Len) is the second installment of the Vocaloid Character Vocal Series. The developer says that his family name was from the developing code combining Kagami (鏡, mirror) and Ne (音, sound), i.e., and so he's a mirror image of 鏡音リン, his name meaning "left", and hers "right", with the first syllables of their given names a pun on “Left” and “Right”. According to Vocaloid’s official blog, Kagamine Len and Rin need to be purchased together and they are both provided by the seiyū Asami Shimoda.

Read more about 鏡音レン on Last.fm.