Kaeya Alberich

Birthday: November 30th
Gender: Male
Weapon: Sword
Vision: Cryo
Titles: Frostwind Swordsman, Quartermaster of the Knights, Cavalry Captain, Master Kaeya, Captain Kaeya
Constellation: Pavo Ocellus
Regions: Mondstadt, Khaenri'ah
Affiliations: Knights of Favonius, Khaenri'ah, Alberich Clan, Ragnvindr Clan
Relatives: Crepus Ragnvindr (Adoptive father, deceased), Diluc Ragnvindr (Older brother)

In the Knights of Favonius, Kaeya is the most trusted aide for the Acting Grand Master Jean. You can always count on him to solve any intractable problems.

Everyone in Mondstadt loves Kaeya, but no one knows what secrets this witty, charming knight has...

Kaeya is the Cavalry Captain of the Knights of Favonius. He is held in high regard by the people of Mondstadt — even with all his eccentricities and secrets.

Kaeya wears a half-cape with a fur collar; a white-collared, cleavage-revealing blouse; dark, tight-fitted trousers; and knee-length boots. His Cryo Vision hangs from a loose brown belt, which also has a blue gem and a rope. He has a blue earring on his left ear.

(Source: Genshin Impact Wiki)