Kaeya is an outwardly confident and charming individual with a flair for drama. He is sometimes seen as overly laid-back and even lazy, but he takes his work seriously. His charisma and determination have earned him the admiration, respect, and favor of many people in Mondstadt — yet, his love for provoking others has also gained him the exasperation of those same people. He has a tanned complexion and navy-blue hair with streaks of lighter blue, accompanied by a waist-length lock of hair.