No. Leon and Lola were the original English Vocaloids. They are part of the original Vocaloid series. They were produced by the Zero-G company. Their voicers are separate mature male and female voicers, respectively, and are unknown. They are nothing like Rin and Len. The Kagamines are part of Vocaloid2. They were produced as part of Crypton Future Media CV series. They are Japanese Vocaloids, are meant to have a young child's voice, and are voiced by one person, who has been revealed.