Albedo.

A genius known as the Kreideprinz, he is the Chief Alchemist and Captain of the Investigation Team of the Knights of Favonius. Albedo — an alchemist based in Mondstadt, in the service of the Knights of Favonius. "Genius," "Kreideprinz," or "Captain of the Investigation Team"... Such titles and honors are of no consequence to him when there is so much more research to conduct. The pursuit of fortune and connections cannot hold a candle to his heart's desire — acquiring the limitless, obscure knowledge left behind by previous generations of scholars. Personality A genius known as the Kreideprinz, he is the Chief Alchemist and Captain of the Investigation Team of the Knights of Favonius.

Having gained fame for his alchemical talents, Albedo is a reclusive person, spending most of his time in Dragonspine. He isn't fond of most social interactions and thus rarely travels to the city of Mondstadt unless it is to meet up with his fellow alchemists or other acquaintances. Yet he's also shown to at least be fascinated or interested in them in some way, often willingly appearing in events that have some sort of social setting going on and helping out the people around him in any way he can. While he does seem to enjoy company and seeing how people interact in a social setting, he finds relationships stressful and tiresome because of the amount of effort needed to maintain them. This doesn't mean he dislikes the relationships he has with others, he simply struggles with them and can get tired out from trying to keep track of everything to keep the relationship from falling apart. He prefers being around children, especially Klee, seeing her as a younger sister. Klee in turn sees him as an older brother figure.

He is Xingqiu's illustrator and regards him as a good author.[3]

As much of a positive demeanor he gives off, the people of Mondstadt do not know anything about his personal life and he is particularly secretive about it towards them. To the Traveler, he does not mind sharing most of his secrets with them due to feeling a kinship of sorts as they are both not of Teyvat, him being an artificial lifeform and the Traveler a visitor from afar. He considers himself to be dangerous due to his knowledge on the Art of Khemia, something which Venti and Dainsleif are well too aware of.

Albedo's hair is partially pulled back in a braided half ponytail. He wears a long white coat with short sleeves and a black hood. Under this, he wears an indigo shirt and a pair of black shorts, embellished thigh-high black boots with silver accents, and long black gloves. His Vision is right below the collar of his shirt.