Black Rock Shooter

ブラック★ロックシューター (Black★Rock Shooter) (or simply abbreviated as BRS) is a character created by a Japanese illustrator huke. She is a 15 year old girl who attaches a cannon on her left arm, and the cannon shoots 20 rock bullets per second.

Calne Ca

Calne Ca (骸音シーエ) is viewed as a derivative of Hatsune Miku, she was created by the 3D animator Deino. Her name comes from kara (骸) and ne (音), as well as CA (シーエ), the chemical symbol of calcium. This is due to Calne Ca being a mechanized skeleton with a skin or casing in the shape of Miku.

Avanna

Avanna is the upcoming celtic-themed Vocaloid3 voicebank by Zero-G.

Ruko Yokune

Greedy Sound, from the fact that she has two voicebanks (female and male).
However, her name is also a playword on the phrase Yoku Neru ko. Alternatively, her whole name is sometimes written as よく寝る子 (yoku neru ko), which translates as "The girl who sleeps a lot."

Utatane Piko

Utatane Piko (歌手音ピコ) is the first Vocaloid from Sony Music Distribution and uses the Vocaloid2 engine. He is currently the only Vocaloid to have appeared from Sony. He was released on December 8, 2010. ^[1]

Sweet Ann

Sweet ANN is a Vocaloid released by PowerFX. She was the first Vocaloid created using Yamaha’s Vocaloid2 upgraded software.

She is voiced by an Australian singer whose artist name is "Jody"

Sweet Ann picture in Taiwanese version~