To think that it started with just one vocaloid... :D
Official Entry to the 12th MMD Cup Finals
Video is not mine :P Taken from Nico Nico Douga.
Original Video Link:
Vocaloids as shown by order:
Leon, Lola, Miriam, Meiko, Kaito, Sweet Ann, Hatsune Miku, Kagamine Rin, Kagamine Len, Prima, Gakupo, Megurine Luka, Gumi (Megpoid), Sonika, Hayama Kiyoteru, Kaai Yuki, SF-A2 Miki, Big Al, Tonio, Lily, Ryuto (Gachapoid), VY1, Nekomura Iroha, Utatane Piko, VY2, Mew, SeeU, Mo