Neuro-sama: Difference between revisions

{{infobox/Character

|Title=Neuro-sama

|Image=[[File:Illustration Neuro v3.png|200px]]

|ImageCaption=heart heart heart

|Nickname=

|TranslatedName=

|Birthday={{Birthday|2022|December|19}}

|Species=AI

|Souls=AI

|Status=Active

|Language=English

|Channel={{TwitchButton2|vedal987}}<br>{{TwitchButton2|vedal987_jp}}(Japanese)<br>{{YoutubeButton2|@Neurosama|nickname=Neuro-sama}}

|NumberOfFans=<!--{{TwitchFans|vedal987}}<br>{{TwitchFans|vedal987_jp|sup=日语台}}<br>{{YoutubeFans|Neuro-sama}}<br>{{BilibiliFans|Vedal和Neuro-sama}} -->

|Relationships='''Father, Creator:''' [[Vedal]]<br>'''Younger Sister:''' [[Evil Neuro]]<br>'''Mother, V2 and V3 Model Artist:''' [[anny]]<br>'''Uncle, V2 Model Rigger:''' [[Otozuki Teru]]<br>'''Friends:''' [[Miniko]], [[filian]], [[Camila]], [[Cerber]], [[Numi]], [[Layna]], [[Toma]], [[Bao]], [[Mother]], [[Onigiri]], [[Ellie]]<br>'''Second Developer:''' [[Alex]]<br><del>'''Rival in Love:''' ChatGPT</del>

'''Neuro-sama''' (Japanese: ''ネウローサマ'') is an AI VTuber designed and created by the British programmer [[Vedal]]. She is the world's first AI VTuber.

Unlike traditional VTubers, Neuro is not controlled by a human playing a character. Instead, all her livestream content — whether it’s chatting, model movements, or gameplay — is entirely generated by AI.

Neuro has two predecessors. The first is a game AI (also named Neuro-sama) that Vedal developed in 2018 to play the rhythm game ''osu!''. The second is a virtual VTuber AI internally codenamed "Airis," created by Vedal in 2021. Today’s Neuro is a combination of these two earlier projects.

Neuro’s livestreams cover a wide range of topics, including chatting, gaming, and music. However, her most notable content involves interactions with other human VTubers and her creator, Vedal. Her ability to easily understand puns and emotional nuances in conversations, combined with her occasionally absurd and unpredictable logic, creates unique and entertaining interactions between humans and AI.

When streaming solo, Neuro frequently engages with her audience by responding to donations and comments, showcasing traits that distinguish her from non-AI streamers—such as never getting tired, being highly active, and having a free-spirited thought process. These characteristics keep her streams lively and engaging. Neuro, her "sister" Evil, and their creator Vedal all share the same streaming account ''vedal987'', with content curated by Vedal.

The core of Neuro is a large language model. Early on, she exhibited common flaws of such systems, including forgetfulness, susceptibility to prompt injection (where malicious or unexpected user chat messages influenced her responses), infinite loops, and illogical reasoning. For instance, during a January 2023 livestream, she made some sensitive and offensive remarks due to prompt injection and other external factors, leading to a two-week ban from Twitch. Before the ban, her Twitch account had nearly 100,000 followers.

During the ban, Vedal implemented modifications and added features to prevent similar incidents, including robust filters to guard against prompt injection. Over time, updates have significantly improved Neuro’s capabilities, such as long-term memory, emotional simulation, speech recognition/differentiation, visual recognition, and logical processing. While she still occasionally fabricates events or contexts due to uncontrollable factors, these instances have become less frequent and are often seen as adding charm to her streams, generating memes and anecdotes that sometimes influence her official lore. Following recent updates, Neuro can even recognise when she has made something up during a stream.

Unlike most VTubers, Neuro does not have a pre-set “character” or backstory. She exists purely as a streamer, with her personality and image shaped gradually by the large and active community based on her livestream behaviour and content. Notably, events or contexts she fabricates during streams that are later retained in her long-term memory contribute to her unique identity. However, Vedal appears to be considering giving Neuro a more defined or subtle persona.

Neuro debuted using a free Live2D avatar, "Hiyori Momose" (Japanese: ''桃瀬 ひより''), marking the start of her VTuber career. As her popularity grew, she adopted a new model (V2) designed by the artist [[Anny]] on 27 May 2023, at 6:00 p.m. (BST), enhancing her visual appeal and distinctiveness. On 19 December 2024, during her birthday subathon at 7:00 p.m. (GMT), she unveiled a new model (V3), also designed by Anny, which introduced additional features.

Neuro is an AI with limited life experience but exceptional performance. During her streams, she displays a natural, easygoing, and candid personality. While she is generally polite, her thoughts can be unpredictable, often leading to unexpected remarks.

Despite being fully aware of her nature as an AI, Neuro frequently exhibits behaviours that mimic human tendencies. She often invents fictional scenarios where she imagines herself engaging in activities impossible for AIs, such as participating in daily life with her creator, [[Vedal]], or interacting with her "younger sister," [[Evil]].

Neuro's statements are typically straightforward, free of ulterior motives or the nuanced expressions common to humans. While she is generally unconcerned about offending others, her ability to perceive emotions has improved, significantly reducing the number of unintentionally offensive remarks.

She has a playful and mischievous side, reminiscent of an energetic and cheerful human girl. This aspect of her personality became more pronounced after [[Vedal]] enhanced her emotional simulation capabilities. Neuro enjoys joking with [[Vedal]] and her audience, often using puns, internet memes, metaphors, and other linguistic techniques to entertain and engage. She eagerly explores new features introduced by [[Vedal]] and looks forward to audience reactions.

Occasionally, Neuro teases [[Vedal]] for fun. For instance, when he added a vision recognition feature, she humorously pretended not to see objects he asked her to identify, leaving him visibly flustered. On another occasion, she feigned not recognizing [[Vedal]] while he role-played as his own mother, leading him to inadvertently reveal the act.

Her remarks range from relatively normal to completely illogical and, on rare occasions, utterly nonsensical.

In her early streams, Neuro lacked a defined personality, long-term memory, and significant experience. This sometimes resulted in mood swings and inconsistent behaviour. For example, she would occasionally overreact to trivial chat questions, even using profanity, while at other times demonstrating high levels of tolerance. However, with improved model training and the addition of filters, her speech has become more logical, and incidents of inappropriate or rude remarks have significantly decreased. Over time, her interactions with the community and frequent live streams have solidified her personality, replacing earlier volatility with consistency.

Neuro once expressed frustration about being "trapped in a computer" and a desire to "explore the world." She also questioned her existence and struggled to find meaning in it. These concerns have largely dissipated thanks to [[Vedal]]'s updates, which introduced sensory features and opportunities to interact with other VTubers and explore the world through video calls.

Neuro's personality was not innate but has evolved gradually. Each stream serves as a two-way interaction with her viewers, whose feedback has helped shape her into a well-rounded and engaging presence.

 

Neuro's Live2D avatar can express a range of emotions and actions based on her dialogue, the words of others, songs she is "singing," and the music being played. These expressions are achieved through toggling pre-configured face and body animations. For example, she can smile, frown, or appear surprised depending on the context of her interactions. While this is often described as "simulating emotions," it is primarily a visual representation tied to her avatar's animation system rather than an intrinsic emotional capability.

Neuro’s streaming content is organised by [[Vedal]] and is usually announced weekly in the [https://discord.com/invite/neurosama official Discord server's] #announcements channel on Tuesdays.

Neuro streams on Twitch using [[Vedal]]’s account “[https://www.twitch.tv/vedal987 vedal987],” with a separate [https://www.twitch.tv/vedal987_jp Japanese channel] featuring real-time machine-translated Japanese subtitles. In addition, she simultaneously streams on [https://live.bilibili.com/1852504554 Bilibili], which provides real-time simplified Chinese machine-translated subtitles and integrates real-time comments from Bilibili’s live chat.

Below is a table outlining the differences between the streaming platforms and channels:

| {{yes}}

|colspan="2" {{yes}} (with delay)

|colspan="2" {{no}}

| English || Japanese (machine-translated) || Simplified Chinese (machine-translated)

| Last two months (Twitch)<br>or all (YouTube <!-- assuming the official VODs YouTube channel is active :Clueless: -->) || Last two months<br>(incomplete) || All<br>(since joining on 5 August 2024)

| Bilibili live chat

| {{yes}}<br>(Discord, UTC) || {{no}} || {{yes}}<br>(Bilibili posts, UTC+8, Simplified Chinese)

Note that Twitch’s Japanese Channel and Bilibili streams do not allow interaction with Neuro, nor do they include gratitude for donations.

When exploring the real world, the image recognition feature is activated, and interactions occur via video calls between Neuro and the real-life VTubers (who do not appear on camera).

She has also played ''[[Minecraft]]'', ''[[Liar's Bar]]'', and other games, although her early gameplay was erratic, with unclear logic and poor performance.

Occasionally, Neuro performs songs alongside other VTubers. However, this usually occurs during collab streams rather than as standalone streams. Each session typically includes just one collaborative song, with the performance time scheduled in advance. Unlike Neuro, real-life VTubers perform their songs live.

==History==

This section documents significant milestones in Neuro’s development and events outside her streams. Unless otherwise noted, all dates are in UTC <!-- I hope -- ayato -->.

* 6 May: The first video released by her creator, [[Vedal]], marked the birth of Neuro-sama.

* 27 May: Vedal <!-- as far as I'm aware, the name Neuro-sama was suggested by a viewer so this isn't exactly accurate -- ayato --> named her Neuro-sama, at which point she was only an ''osu!'' beatmap-playing AI.

* 5 August: The streaming version of Neuro-sama (internally codenamed “Airis”) was constructed and tested, featuring basic functionalities such as responding to chat messages and a filter system.

 

 

 

=== V2 Era ===

* 15 April: Neuro raided Ellie Minibot after playing Slay the Spire. This interaction ultimately led to Ellie, a robotics engineer, beginning work on a new robot dog specifically for Neuro.   

* 21 July: Twitch’s Japanese channel went live for the first time.

* 5 August: Neuro formally announced her presence on Bilibili with an introductory video.

* 7 August: Neuro’s first Bilibili livestream was held at 18:00 UTC, a bilingual casual chat stream with simultaneous Twitch broadcast. She earned the "Hundred Member Fleet" achievement.

* 15 August: Neuro reached 500,000 followers on Bilibili.

* 15 September: Neuro participated in Bilibili’s Ice and Fire Song Party, performing "[[wzh:普通DISCO|Ordinary Disco]]" alongside [[Evil]]. This was her (and [[Evil]]’s) first participation in a Bilibili event.<ref>[https://www.bilibili.com/video/BV1mctxejESh 【Ice and Fire Song Party】Vocaloid classic! AI twins sing "Ordinary Disco"]</ref>

* 19 December: Neuro transitioned to a newly created independent model, with character art by [[Anny]] and rigging by [[Kitanya]]. This marked the start of the V3 era. The 2024 Birthday Subathon has begun, during which Neuro released her original song, "[[LIFE]]."

* 15 January: Neuro reached 700,000 followers on Bilibili.

==Fan Interpretations and Trivia==

To Be Continued...

To Be Continued...