This character is associated with the pixiv tag ιη·. A stylized form of the first character can be seen on the forward part of her flight deck here, while the second character is a Chinese simplified character, indicating a Chinese reading, which would be "Xingye". She has 50 or so posts from multiple artists, and a consistent design featuring black, somewhat scraggely hair, cat ears, red eyes, a mole under her right eye, small to medium breasts, and a tendency to wear a jitome expression.
The first posts of this character are by a pixiv account with the name ιη·, so at first glance it seems Xingye might just be the original artist's name. However a number of posts have commentary (for example pixiv #81073191: "Xingye cat [lingerie] - Xingye is cute") which strongly suggest Xingye is also the name of the character. One post (pixiv #85393679) is also tagged with "vtb", probably short for Vtuber. In which case the character and artist may ostensibly be one and the same, in that peculiar Vtuber way which hurts my brain.
I don't know Chinese, but I think you're right. If you put, "ιη· vtuber" into duckduckgo, it gives you the page, "https://zh.moegirl.org.cn/θΏζιηηδΉ" which looks like a vtuber wiki page to me.
It looks like https://twitter.com/xinye233 is her twitter account and it links the pixiv account you mentioned (tagged Xing, here), which links http://live.bilibili.com/318. I don't know if she's live now or if its a replay, but going to the live.bilibili link gives me an art stream. The zh.moegirl google translation also said something about being an artist, so my guess is the character is a bilibili vtuber who does art streams and posts on those pixiv and twitter accounts.
This character is associated with the pixiv tag ιη·. A stylized form of the first character can be seen on the forward part of her flight deck here, while the second character is a Chinese simplified character, indicating a Chinese reading, which would be "Xingye". She has 50 or so posts from multiple artists, and a consistent design featuring black, somewhat scraggely hair, cat ears, red eyes, a mole under her right eye, small to medium breasts, and a tendency to wear a jitome expression.
The first posts of this character are by a pixiv account with the name ιη·, so at first glance it seems Xingye might just be the original artist's name. However a number of posts have commentary (for example pixiv #81073191: "Xingye cat [lingerie] - Xingye is cute") which strongly suggest Xingye is also the name of the character. One post (pixiv #85393679) is also tagged with "vtb", probably short for Vtuber. In which case the character and artist may ostensibly be one and the same, in that peculiar Vtuber way which hurts my brain.
Can anyone confirm or clarify any of this?
Various Chinese wikis (including the one Retardant II posted) list ιη·/θΏζιηηδΉ as the handle of an individual who is both an artist on Pixiv and a livestreamer on Bilibili. Accounts for both also exist under those names. The character here is the artist/livestreamer's avatar, which is usually referred to as ιη· (especially when drawn by other artists) instead of the other aliases.
Wiki also mentions that the artist/livestreamer used to be a contracted artist working on art for livestreamers, before switching over to becoming a livestreamer themself.
I think this suffices for a character tag, which I have taken the liberty to create.