Vocaloid/Little Einsteins

Version 1

 * Hatsune Mikuo as Leo
 * Hatsune Miku as June
 * Kagamine Rin as Annie
 * Kagamine Len as Quincy

Version 2

 * Kaito as Leo
 * Meiko as June
 * Kasane Teto as Annie
 * Kasane Ted as Quincy

Version 3

 * Kasane Teto as June
 * Kasane Ted as Leo
 * Hatsune Mikuo as Quincy
 * Hatsune Miku as Annie