Vocaloid All Stars: the Best Halloween Party Ever

Hatsune Miku: I am Hatsune Miku dressed up as the candy devil. As you can see, I've got this complete with bat wings. But it looks like I'm not the only Vocaloid weraing a Halloween costume? Who else is wearing theirs?
Kagamine Rin: We are! My brother Len and I are dressed up as the beta version of the Daughter and Servant of Evil.
Kagamine Len: Got these costumes before the story franchise was released.
Megurine Luka: Here I am, Miku, dressed up as a witch.