HBO's Chernobyl Is Based on the Lives of These Real People

Valery Legasov (played by Jared Harris) was the first deputy director of the Kurchatov Institute of Atomic Energy at the time of the Chernobyl crisis. The scientist investigated the cause of the disaster and planned the mitigation of its consequences. According to The Los Angeles Times, his foreign colleagues praised his honesty in talking about the cause and effects of the accident. He attributed the disaster to design flaw and human error.

Legasov committed suicide in 1988, reportedly leaving behind tapes with undisclosed information about Chernobyl. He implied that political pressure censored bringing up the Soviet nuclear secrecy that kept plant workers in the dark about known problems and accidents with the reactor model.

Boris Shcherbina (played by Stellan Skarsgard) was the deputy head of the Soviet government in charge of the investigation after the Chernobyl disaster hours after the accident. When he arrived in Pripyat (the city near the plant), he rejected to suggest an order for mass evacuation, saying, "Panic is worse than radiation." The town would not be evacuated until 36 hours after the explosion.

He died in 1990 at age 70, and it's not clear if he died of radiation or not, given that he ordered the construction of a new town in the highly contaminated area. In a secret 1988 decree that he helped form, Soviet doctors could not cite radiation as a cause of death or illness.

Emily Watson plays Ulyana Khomyuk, a Soviet nuclear physicist who's trying to get to the bottom of what happened at Chernobyl. According to The Daily Telegraph, this character is a "fictional amalgam of Soviet scientists whose names we don't know, who risked their freedom and reputations to demand the truth be told."

Portrayed by actor Paul Ritter (pictured on the left), Anatoly Dyatlov was Chernobyl's deputy chief engineer who looked over the fatal experiment and was exposed to a dangerous amount of radiation himself. In 1987, the scientist was sentenced to 10 years for criminal negligence, though he was let out on early release.

On the official record, Dyatlov wanted to complete an experiment ordered by Moscow, so he intimidated his workers into taking risks that led to the destruction of the reactor. But he believed that he was a scapegoat and that it was poor reactor design that caused the disaster rather than his experiment. He contends that the investigation was carried out by the people who were responsible for the design of the reactor.

Vasily Ignatenko's (Adam Nagaitis) story, and that of his family, is truly a tragic one. Ignatenko was a newly married 25-year-old firefighter who had gone to put out the flames at the Chernobyl reactor. Because of high radiation levels at the site, he died a slow and painful death two weeks after the disaster.

The details of his injuries are harrowing and graphic. On the outside, lesions broke out on his face, his body turned multiple colors, his skin cracked, and his hair fell out in clumps. Upon his death, Ignatenko was considered both a national hero and a radioactive threat, buried in a zinc coffin in Moscow.