Len Kagamine Friends

Megurine Luka is the third Vocaloid2 in Crypton's Vocaloid2 Character Vocal Series. Her surname combines Meguri (巡, circulate or around) and Ne (音, sound), while the name Luka invokes the homonymous Japanese words of "nagare" (流, flow) and "ka" (歌, song) or "ka" (香, scent); thus making "songs to all around the world as scent spreads." Yu Asakawa provided the voice for the "cool, somewhat mysterious" character.

A Vocaloid2 character based off of Ranka Lee seiyuu Megumi Nakajima.

Meiko is a Vocaloid character, developed by Crypton Future Media. Her software uses the first released Vocaloid software. She is also one of The Seniors.

Miku Hatsune is a 'character' from the Vocaloid Character Vocal Series synthesiser developed by Yamaha Corporation

Rin and her brother Len are the second installment to the Vocaloid Character Vocal Series. Voiced by Asami Shimoda.

Namine Ritsu is the 3rd release from the VIPs of 2chan.

She is a Vocaloid character developed by AH Software.