|Vier Ah Ruu|
|Full name||Vier Ah Ruu|
|Birthdate||Unknown, 16 years old when the game takes place|
|Family/Relatives||Ciel Ah Ruu (older brother)|
Vier Ah Ruu (ヴィエル＝ア＝ルゥ) is a character in Twinkle Star Sprites: La Petite Princesse. His official nickname is "Monster Hunter".
He is voiced by Yuuichi Nakamura, who also voices his brother Ciel.
Vier Ah Ruu is a hunter who is always looking for a monster to slay. Visually, he looks like a dogboy and sports a bushy tail and pointy ears.
Vier is a tact and cold teen. He is more interested in finishing his jobs in a clean and professional manner.
- Flight - Vier can fly using his magic-powered guitar.
- Musical Blasts - Using his guitar, Vier can defend himself by playing a musical riff during battle.
- Ryuhaku - Under certain conditions, he can summon a large robotic red dog to terrorize his opponent's side of the field. It has twin speakers on its shoulders, which it uses to attack with amplified soundwaves.