I have some vocaloid headcanons to rejoin this site with
Hatsune Miku: A genuinely cheerful person who started right out the gate as a solo idol. Wants to make everyone happy and is friends with many. Knows how to play most instruments
Kasane Teto: Trans idol kicked out by her manager after Miku joined the industry for not being cheerful and marketable enough, eventually becoming an independent idol as a result and using her real name this time around, initially resenting Miku but once meeting her becoming close friends. Eventually developing a crush on Miku and always asking to collab on songs to spend more time with her. Doesn't know any instruments but is a better vocalist than Miku.
Megurine Luka: Fully digital music producer. Generally reserved in private but still records her own vocals and performs in public, is decent at a few common instruments but is most at home with a DAW.
Kagamine Rin: New idol excited to make music and always wanting to try new things. Still figuring things out about herself.
Kagamine Len: Always shy and moving around like a lost puppy, but enjoys making music with Rin.
MEIKO: Veteran musician and previously an idol before becoming a musician in a bar and music teacher. Adoptive mom of the Kagamine siblings. Taught them and Miku how to sing and play instruments.
KAITO: Tired and constantly dragged into everything but enjoys making music. A guide to plenty of other musicians.
Kaai Yuki: Basically Kanade (Project Sekai) when she still had both parents
