A direct translation of the Japanese-coined VTuber (バーチャルYouTuber) format — a livestreamer who appears on screen as an animated avatar driven by motion capture. Massive on Bilibili since the late 2010s. Often shortened to V主播 or just V.
usage
Compare with 真人主播 (zhēnrén zhǔbō) 'real-person streamer.' 虚拟偶像 (xūnǐ ǒuxiàng) 'virtual idol' is a related but separate concept (e.g. 洛天依), referring to fully scripted virtual performers.