Aiseca : here's what I think my top 10 of the Vocaloids who are singing most creepy, sick, very dark songs.

10. Gakupo

9. Oliver

8.SeeU

7. Gumi

6. Meiko

5. Megurine Luka

4. Rin Kagamine

3. Kaito

2. Miku Hatsune

1. Len Kagamine