Kagamine Len is currently the only male Vocaloid with Appends assigned to him. They added an additional 6 voicebanks in the Append on top of the originals; a total of 10 voicebanks and the most of any Vocaloid. The Kagamine’s Append was split and 3 recorded in two different scales for Rin and Len accordingly.
This is a pretty awesome costume for Len. I wonder where it’s from? Thanks to Tina for sharing this!