Her voice provider is Aimi Tanaka (田中あいみ; Tanaka Aimi).
Una's birthday is July 30.
Una's appearance has a blue motif, including blue hair, clothing, and an eel-themed hat. She is featured in a teacher's outfit, the same outfit she wore on her previous Una Talk bank.
- Ottoman Bō - An eel-themed hat that is seen changing expressions to match Una.
On June 15, 2016, a teaser trailer was uploaded to what is now Otomachi Una's official YouTube channel revealing the silhouettes of two VOCALOID libraries: Sugar and Spicy. A few weeks later, on June 30, another video was uploaded, revealing that the two VOCALOID libraries belonged to one character: Otomachi Una. Her VOCALOID4 package would release one month later, on July 30, 2016.
A few months after her VOCALOID release, on March 8, 2017, another teaser was uploaded featuring the designs of Sugar and Spicy, along with a hidden third Una design that was yet unrevealed. One week later, the full design was shown, belonging to Otomachi Una Talk. Una Talk (or Talk Ex) ran on the same engine as VOICEROID+ EX, AITalk, but was not part of the VOICEROID lineup as the brand is owned by AH-Software Co. Ltd.
Since her initial release as a singing and speaking mascot, Una has participated in various collaborations with companies.
On November 11, 2020, Una's VOICEROID2 was revealed, and she released December 11, 2020.
On July 16, 2021, Una was both announced and released for the real-time input engine Voidol.
On her website, Una has a list of downloadable content which includes official MMD models created by kuu_wanko and Rennya, free motion data, and official video materials.
She has an official Twitter and website.
- Otomachi Una
- Otomachi Una (VOCALOID4), July 30, 2016
- Otomachi Una (Talk Ex), April 20, 2017
- Otomachi Una (VOICEROID2), December 11, 2020
- Otomachi Una (Voidol), July 15, 2021
- VOICEROID2 Feature Showcase: Youtube Broadcast
- Locked downloads