User blog comment:AngelWings13/Is there any vocaloids that are a only child?/@comment-4238265-20130715215445

Eh, I don't think the word "child" makes sense when they're just Vocaloids. But anyway:

-Mayu

-IA

-Utane Piko

-Akikoloid-chan

-Tone Rion

-SeeU

I think that's it...