Who is the kid in Metro Exodus?

Who is the kid in Metro Exodus? He is the son of Lieutenant-Colonel Khlebnikov of the OSKOM rapid response unit, and presumably the last living survivor in Novosibirsk. Despite being a child, Kirill takes his duties very seriously and looks up to his father as a hero.

He is the son of Lieutenant-Colonel Khlebnikov of the OSKOM rapid response unit, and presumably the last living survivor in Novosibirsk. Despite being a child, Kirill takes his duties very seriously and looks up to his father as a hero.