Main Characters Valery Legasov 5 main appearances Boris Shcherbina 5 main appearances Lyudmilla Ignatenko 5 main appearances Ulana Khomyuk 4 main appearances Anatoly Dyatlov 4 main appearances Alexandr Akimov 4 main appearances Vasily Ignatenko 4 main appearances Leonid Toptunov 4 main appearances Nikolai Fomin 3 main appearances Viktor Bryukhanov 3 main appearances KGB First Deputy Chairman Charkov 3 main appearances General Tarakanov 2 main appearances Colonel General Pikalov 2 main appearances Michail Gorbatchev 2 main appearances Pavel Yefremov 2 main appearances Bacho 1 main appearances Andrei Glukhov 1 main appearances Prosecutor Andrei Stepashin 1 main appearances
Recurring Guest Characters Viktor Proskuryakov 3 guest appearances Oksana 3 guest appearances Mikhail 3 guest appearances Oksana's Kid 3 guest appearances Blond Man 2 guest appearances Kirschenbaum 2 guest appearances Brazhnik 2 guest appearances Aleksandr Kudryavtsev 2 guest appearances Perevozchenko 2 guest appearances Boris Stolyarchuk 2 guest appearances Nikolai Gorbachenko 2 guest appearances Yuvchenko 2 guest appearances Victor Degtaryenko 2 guest appearances Pravik 2 guest appearances Kibenok 2 guest appearances Dr. Svetlala Zinchenko 2 guest appearances Old Maternity Doctor 2 guest appearances Sitnikov 2 guest appearances Zharkov 2 guest appearances Kremlin Aide Female 2 guest appearances ⇤ « 1 2 3 4 » ⇥