Teaser character might be Ainu-inspired
New character's colour scheme seems Ainu-inspired: https://www.mountainwatch.com/Snow-news/the-hokkaido-story-ainu-culture-and-the-powdery-gift-of-the-mountains/
Makes sense since Snezhnaya is heavily based on Russia. The Ainu also lived in Karafuto which used to be a Japanese prefecture but is now under Russian rule. The hood gives me some tribal vibes, and as the Ainu are a minority whose land got shuffled around between Russia and Japanese, we can expect a rebellious character. Presumably something about ancestral lands being mined for resources for Project Stuzha (mentioned by Liben in the latest event quest).
Edit: not clear in this shot, but in a frontal shot the hood might resemble an owl, one of the kamuy (Cikap-Kamuy) seen as "protector of villages." This would still fit the rebellious theme.