Yevgeny Gromov

Yevgeny Gromov arrives in Washington as a Russian intelligence officer working under diplomatic cover, cultivating contacts with the easy charm of a man who never seems to be working at all. He's patient, attentive, and always a step ahead of the Americans around him, quietly steering conversations toward outcomes only he can see.

Costa Ronin plays him without menace on the surface, which is exactly what makes him unsettling — the warmth feels genuine even as you sense every gesture is calculated. The writing lets him operate mostly through persuasion rather than force, and Ronin's stillness makes each small manipulation land harder than a raised voice ever could.