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 Bartender in Polyissa Hotel 1 guest appearances Stasiuk 1 guest appearances Marina Gruzinskaya 1 guest appearances Zukauskas 1 guest appearances Russian News Reader 1 guest appearances General 1 guest appearances Plant Employee 1 guest appearances Yenina 1 guest appearances Dr. Vetrova 1 guest appearances Niyazova 1 guest appearances Miner 1 guest appearances Soldier (Miner's Bus) 1 guest appearances Mikhail Shadov 1 guest appearances Miner 1 guest appearances Miner 1 guest appearances Soldier (Reactor Site) 1 guest appearances Soldier (Mobile Office) 1 guest appearances Old Woman Babushka 1 guest appearances Soldier 1 guest appearances Survey Soldier 1 guest appearances ⇤ « 1 2 3 4 » ⇥