66 (Roro)

Roro (66) is an un-official VY2 mascot illustrated by Tsukasa Ryugu (Manbou No Ane).

History
At VocaFest there was a competition to illustrate a mascot for the VY1 and VY2 software as a method of perceiving how the fandom thought of VY1 and VY2. Manbou No Ane won for VY2 with Roro while Rimiko won for VY1. These mascots where later redefined for an illustration book.

Roro since then has been illustrated in many PVs for VY2, most notably done by Tsukasa Ryugu herself. Numerous fanarts have also been made of Roro.

Trivia

 * Due to his popularity, many fans have confused him to be the official mascot of VY2, this is not the case as VY2 was intended to be avatarless
 * Because of this Tsukasa Ryugu has asked fans not to use Roro in place of VY2 on her Twitter account