Kaeya is the Cavalry Captain of the Knights of Favonius. Held in high regard by the people— even with all his eccentricities and secrets. Witty and charming. Jean's trusted aide. Outwardly confident. Charming. With a flair for drama. Seen as overly laid-back, even lazy, but he takes his work seriously. Charismatic. Tells bold-face lies. Tanned. Blue hair in a back ponytail. Wears an eyepatch on his right eye and will not remove it. Periwinkle eyes. Adopted brother of Diluc.