UTAU wiki

Siyu (시유) is a voicebank for the UTAU program.

I gently touch my cheeks, look at the sky and hum to myself a song I pretend to know.
—Lemm, The Au Lait


Siyu is an angel of protection, peace and love. He is a wanderer of many realms, aiding those that are at their lowest point, He also utilizes disciples of his same orthodox and order to help others that he simply does not have the time to be with; a few examples are Whirligig and Whippersnapper, to aid as many people as possible. He services as a symbol of hope and support for those going through the most harrowing of times, giving equal patience and care to anyone, regardless of how grim or how measly their pain is.

He acts in a protective role acts as a guardian and savior, watching over and intervening in the lives of those under his care. Whether it be warning of danger, guiding towards safety, or directly intervening in times of crisis, he serves as a beacon of hope and protection for those in need. His presence is a comforting reassurance that one is never truly alone and that there is always a force looking out for their well-being. He knows the most isolated sometimes just need a shoulder to rest on. It is said that his embrace feels like the brightest of light and an otherworldly sense of warmth that washes over the recipient.

Siyu is far from afraid to speak his mind with a sense of brutal honesty, but with a loving conviction that showcases his empathy but his realism. He does not wish to sugarcoat or lead on those who are in pain, to not lead them astray more than they already have been. He is a best-described as a parental type of figure with a stern care but a stoic willingness to tell a hurting soul how it is, and giving life-changing advice that set them on the right path. He knows the righteous path of his guidance comes through when he is honest.

He is an angelic messenger of sorts, oftentimes giving letters to those in need; delivering heartfelt words and affirmations tailored specifically for each individual as a beautiful and touching concept. This guardian angel not only delivers these uplifting messages but also nurtures the soul and spirit of those in need, acting as a beacon of hope and positivity in a world that can sometimes feel bleak.

Siyu is a counterpart of sorts to Iyashi. The two have rarely interacted with each other too much, as their time is occupied in completely different responsibilities to serve under and do not cross paths much in their many ventures to help others. They have a deep, profound respect for one another and the work that they mutually do.

Siyu was the prime reason that Panka was able to come back to the world of the living. After the long span of traumatic incidents, Panka made an attempt to make the biggest decision one can make: to end his own life. Siyu, who had lingered in the presence of Panka in the past, was able to catch Panka in the half-life between the living and the dead, as he slipped in between the two, fully willing--and even wishing--to never come back. Clutching Panka in his arms as he sobbed, Siyu attempted to give the message of love and understanding that Panka desperately needed to hear. For the first time, with no exceptions or expectations, Panka was able to confide. The time and space of reality simply did not matter nearly as much wherever they were in this plane, so it felt like days, but likely was only minutes in the real world. Panka felt more warmth in that moment than he ever had in his life and it was able to will him back to life.

Siyu has an operatic tone that carries on with a certain resonance that is incomparable and nearly impossible to explain without bearing witness to it, with a rumble and roll to his words that is thunderous, yet not inciting fear in those who hear it.

His biggest conflict within himself is that he cannot help more, as the suffering of others can oftentimes make him draw a tear himself by his lonesome. It is why he began to send out disciples to help him in his efforts, as every single soul that he loses and person he could not save pierces deep into his own heart and his own soul, tearing out a piece of him with every single moment that he could have given his love to those in need. He blames himself deeply for those he loses.


While Siyu has a personality and canon information given to him by his creator, it is not mandatory that you make content following this information. He may be depicted in any way regardless of his canon information, as long as it follows the UTAU software terms of use.

Siyu is a harbinger of love and a guardian of those in need. He is a compassionate and devoted being, committed to spreading understanding and love among those in need. His willingness to provide guidance and comfort to the suffering shows a deep sense of empathy and care for humanity.


  • Siyu - to discuss in whispered tones

Character details[]

  • Name: Siyu
  • Age:
  • Gender: Male
  • Sexuality: Up to interpretation
  • Pronouns: he/him
  • Height: 6'6" (198.12 cm)
  • Weight: Weightless
  • Hair color: Dark red with copper-colored ombre
  • Eye color: Reddish brown with black scleras
  • Body type: Thin
  • Likes: Sunsets, spreading faith, animals, sweet crepes, and science-fiction books
  • Dislikes: Fog, him, people who hurt others, and condescending tones
  • Character item: Daffodil



Terms of Use[]

  • R-18 Content Allowed? Forbidden
  • Commercial Use of Voicebank Allowed? Permission is required
  • Commercial Use of Character Allowed? Permission is required
  • Do these terms apply to derivative characters/voices? Derivatives of any sort are forbidden
  • Terms of use? Click here to view the full terms of use

Product Information[]


  • Samples rendered with RVC AI
  • Recorded in 2024
  • Configured by Near
  • A2
  • Rendered .frqs
  • VCV


  • Samples rendered with RVC AI
  • Recorded in 2024
  • Configured by Near
  • D3
  • Rendered .frqs
  • CV-VV

POWDER's tone is a more casual tone than SKYFALL, as SKYFALL's tone is much more operatic.


  • Siyu was created as a love letter to his creator's old friend, as several character attributes are references to their friendship.
  • Siyu came vividly from a dream his creator had.
  • Siyu is loosely inspired by Marius Miura.

This article is written and certified true and correct by the author of the character. The details seen here may be subject to change without prior notice.