Mines has always been Miku and always will be Miku.
She was the first Vocaloid I've ever fallen in love with.
Though the VERY first Vocaloids I ever saw were Len ans Haku...
Of course its Len Kagamine! He is so cute but anyhow very cool. He seems so easygoing he is just such a darling. Since I like him so much I did cosplay three diffrent versions oh him. Here you can see me as Len Kagamine from Hitobashira Alice!