Merli is a Vocaloid released for VOCALOID 3.
Unlike most Vocaloids, who are usually a blank slate you can personalize as you like,
Merli has some canon traits.

Merli holding a microphone

She's a fairy of darkness and can draw away the energy of living beings by transforming music into power.
She has a younger sister: Aoki Lapis.
She is Merli's rival and a fairy of light and she gives life when she sings.

Merli is defined as strong-minded and a tsundere.
Also, since she's a fairy, she's only 16 cm tall!

I love her deeper and more mature voice,
it sounds different than the voice of most other feminine Vocaloids.

It makes me sad that she's a forgotten Vocaloid and there aren't many songs sung by her.
It's a shame, especially when you see that her sister has a lot more recognition
despite not being a very popular Vocaloid either.

Some originals songs featuring Merli I like are:

I also love her butterfly-themed design and her crystal headphones.
She somehow looks cute, elegant and cool at the same time.
She's so pretty and I can't accept that there is so little fan art of her.
I must draw her more!

Merli with flowers

Merli deserves better!!