According to the leaks, Mimi is Hydro Catalyst user from Inazuma region. We don't know any more about her yet though.
Here are 3D models leaked by Lumie. Check the original tweet here.
@NEPTUNE_XVIII Hutao ans rosaria is the next one according to leaks
v1.3 Lantern Rite (February 2021).
- Xiao (Polearm, Anemo) 5*
- Weiwei (Claymore, Electro) 5*
- Yaoyao (Catal… https://t.co/XBzWunwsqf
Females 1 https://t.co/DzZHIM2mD6
Puzzles, Secrets, and Hidden Chests in Dragonspine
ATK% VS Physical/Elemental DMG% in Genshin
Puzzles, Secrets, and Hidden Chests in Liyue