Kaeya is an outwardly confident and charming individual with a flair for drama. He is sometimes seen as overly laid-back and even lazy, and he's seen to be good at talking to ladies, like how he talks to friends. Diluc, is quite the grumpy type, though, in reality, he's just not interested in meaningless interactions. But, when you know him well enough, he's a caring person, kind, hard worker, and a charming individual as well, and he has red hair. Kaeya and Diluc, are step-brothers.