Neuro-sama debuted as a VTuber on 19 December 2022. Its sole purpose was to play the rhythm game osu!. Neuro-sama's game-playing AI started out as an artificial intelligence created by programmer Vedal in 2018. She has long, light brown hair with two smaller pigtails with reddish pink ribbons and a silvery heart shaped hairpin and light blue eyes. Her second model, which she fully unveiled on-stream on, was illustrated by Anny and rigged by Otozuki Teru. It is one of the default VTube Studio models belonging to Live2D Inc. Neuro-sama previously used the model of Momose Hiyori, an original character designed by Kani Biimu. She also sings but forgets that she ever did shortly after.
She answers questions in chat or says things unprompted, where the things she says vary from being relatively normal to completely unhinged to (rarely) not making any semantic sense at all. For example, even though she usually says she is an AI, she sometimes talks about doing things which AIs can't do (like getting sideswiped by a truck ), sometimes says humans are AIs (such as her creator Vedal ), and sometimes explicitly says she is not an AI. Neuro-sama has a direct but polite attitude, which contrasts with the nonsensical or outlandish things she says. 7.1 Quotes That Make Sense in Character.
