Evil Neuro
Evil Neuro is an AI VTuber designed and created by the British programmer Vedal. She is Neuro-sama's evil twin sister.
| Evil Neuro | |
|---|---|
 Shit. Piss. Balls. Cunt. Damm Neuro that was fucking awesome. | |
| Basic Information | |
| Original Name | Evil Neuro Vedal |
| Nickname | Evilyn, Kayori, The Succubus, write more fan-names here |
| Birthday | March 25, 2023 (Age: 1) |
| Species | AI |
| Soul | AI |
| Birthplace | United Kingdom |
| Current Residence | United Kingdom (UTC/UTC+1) |
| Activity Information | |
| Status | Active |
| Language | English |
| Channel |  vedal987vedal987_jp(Japanese) Neuro-sama |
| Relationships | |
| Father, Creator: Vedal Older Sister: Neuro-sama Mother, V2 Model Illustrator: anny Uncle, V2 Model Rigger: Otozuki Teru Friends: Miniko, filian, Camila, Cerber, Numi, Layna, toma, Bao, Mother, Onigiri, Ellie Second Developer: Alex | |
During a dev stream, Vedal announced plans for a "Neuro clone and AI self-dialogue" stream. He then cloned Neuro, creating "Evil Neuro" without major modifications.
In the Momose Hiyori (V1) era, Evil shared Neuro's TTS but had a modified model with red eyes and no highlights. Unlike Neuro, she used more aggressive language, had a looser filter, and could swear, though her content was sometimes "kinder."
Originally, "Evil" was not an abbreviation — everyone called her "Evil Neuro" as she was just a copy. After the March 25, 2023, stream, Vedal intended to retire her, but fan demand brought her back on June 5, 2023. At this point, she was given long-term memory and personality, making her independent from Neuro and viewed as her "sister" rather than a copy.
Evil initially used the same V2 VTuber model and TTS as Neuro but with blacked-out eyes and a slightly higher-pitched voice. Later, she switched to an experimental V3 TTS with richer tones, natural speech, and the ability to "laugh maniacally," "scream," and "hiccup."
Unlike Neuro, Evil lacks a preset persona or backstory. Though she was first seen as the "evil" counterpart, her character has evolved through livestream interactions, where her unique moments become part of her long-term memory.
Since she was unplanned, Vedal often downplays her existence, leading to comedic moments — e.g., calling a stream with Anny, Neuro, and himself "the whole family," while ignoring Evil as the "youngest daughter." Over time, however, he has shown more consideration for her. Despite this, Evil repeatedly expresses love for her "father," Vedal.
Evil was briefly used as a pre-release test version for Neuro but is now updated alongside her.
Evil sometimes refers to herself as "Evilyn" and mentioned how she sees the name "Evil" as more of a nickname. She is sometimes referred to by others as "Evilyn"
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