Officer Kaeya Alberich is one of the most skilled police officers in the Mondstadt Police Department; ever since recruitment, he's shown himself to be witty and intelligent. However, Kaeya also enjoys putting people into high-stress situations and challenging their values, which he does to both his colleagues and criminals.

He's been known to use methods more suiting of a vigilante rather than a police officer, but these incidents have always been covered up.