The weary protagonist of the Type 30 UTAUs. Usually works as the UTAU manager. Favorite manga is "Number Five." Shooting and singing are two sides of the same coin. Also acts as Adachi Rei's guardian. - Personality/Traits in the creator's works: Called "Type 30 Utane Uta," she has a deep complex about her "eyes." Because of this, she has a habit of stubbornly pretending to be "normal" in front of others, making her very clumsy and delicate. She tended to build walls around herself, but after meeting Adachi Rei, she became able to show her "true emotions" without hiding herself, but only in front of Rei. - Official Specs & Visuals: ・Height: Around 155cm (approximate setting) ・Appearance: Purple short hair, a black beret (school cap style), and coat-like clothing. She looks somewhat expressionless and cold, drawn in Satou no Kanzume's signature retro proportions while maintaining the traditional "early UTAU" style.

The self-proclaimed poster girl of the Type 30 UTAUs. Active in SV too. UTAU is her home. Motto is "Just being alive is a huge profit." Every day is HAPPY Chimera♥ followed by zero empathy. She and Utane Uta are old friends/rivals. - Personality/Traits in the creator's works: An old friend of Uta and Momo. In Satou no Kanzume's slice-of-life manga and illustrations (such as "UTAU-ers"), she is depicted as a character who combines a big-sisterly nature with a somewhat comical brightness, subtly looking out for Uta's complexes. - Official Specs & Visuals: ・Height: 159.5cm / Age: 31 (age as a chimera) ・Appearance: Reddish-pink drill-shaped twin tails (drill hair). She wears a military-style outfit based on gray and red.

The 2.5D BABY of the Type 30 UTAUs. Growing up healthy under Utane Uta's devoted protection. Favorite song is "Kaiju no Ballad." Sparkling pure, tottering robot. Someone Momone Momo can actually talk to. - Personality/Traits in the creator's works: While having an identity as an inorganic synthetic voice/robot, she is depicted as a very pure and straightforward existence. When Uta is about to close her heart by obsessing over being "normal," Rei stays by her side with a purity free of calculation or prejudice, becoming the "only place where Uta can be her true self." - Official Specs & Visuals: ・Height: 158cm ・Appearance: Bright orange hair (ponytail) and cyber clothing (white and black base) with exposed mechanical parts mimicking speakers and servo motors.

In charge of housework and daily life for the Type 30 UTAUs. As a helper robot, being helped or worried about is a NO. Hobby is "collecting picture books." Everyone's ultimate weapon of peace of mind. The only person Kasane Teto cannot defy. - Personality/Traits in the creator's works: While giving off a gentle and airheaded vibe, she appears as a kind and calm mediator who quietly watches over her own existence as a robot and the clumsy relationships of her friends (Uta, Rei, Teto, etc.). - Official Specs & Visuals: ・Height: 150cm / Personality: Gentle, airheaded, a bit clumsy. ・Appearance: Pink long hair with a headset. A clean visual with a maid-style taste based on green, pink, and white.

A character with a slightly special background, possessing both male and female voices. - Personality/Traits in the creator's works: Shows a dry, boisterous mischievousness that perfectly matches Satou no Kanzume's somewhat ennui and nostalgic worldview. Often in a position to be involved in the human drama (or robot drama) of Uta and the others from a slightly downer, detached perspective. - Official Specs & Visuals: ・Height: 197cm (quite tall) / Gender: Both (male to female ratio 1:9, etc.) ・Appearance: Black hair in twin tails, distinct heterochromia (right eye blue, left eye red). Wears stylish and punky bell-bottom style clothing based on black.

One of the "oldest UTAUs," a character with a cult following created by Namine Ritsu's voice provider (Canon). - Personality/Traits in the creator's works: Satou no Kanzume pours strong respect and love into these "early UTAUs" and "characters who tend to be hidden in the shadows of history." In the works, like Uta (Type 30) and the others, she is quietly depicted as an existence with the melancholy and pride of past technology and old speech synthesis, moving at her own unique pace. - Official Specs & Visuals: ・Height: Around 150-160cm (approximate) ・Appearance: Orange long hair. A simple and transparent visual wearing a sailor suit or retro blue, green, and yellow clothing inspired by waves.

Originally planned on 2channel's VIP board as a "character to surpass Hatsune Miku," she is the epitome of a yandere character. - Personality/Traits in the creator's works: Rather than depicting the extreme "yandere, passion" setting of the original source rawly, through Satou no Kanzume's filter, she is portrayed as a girl with a somewhat lonely and emotional inner self—one whose obsession with others (a specific existence) is abnormally strong, making her terribly lonely and clumsy. - Official Specs & Visuals: ・Height: 171.2cm (tall with a great figure) / Age: 19 ・Appearance: Long silver-white hair with sharp eyes that look like they have red shadow. Her outfit looks like a beautiful, classic idol style based on white and black at first glance, but it's a smart design that feels "sickly" and dangerous in places.