Chief designer of the RBMK reactor who leads the government investigation into the disaster, risking his career and life to uncover the truth about the reactor's design flaws and operational failures.
Ulana seeks Valery's expertise to prevent a catastrophic secondary event, forming a technical partnership under extreme pressure.
Boris holds political authority while Valery provides technical expertise, creating a functional but unequal partnership.
Valery's technical solutions drive the narrative forward, while Lyudmilla's personal tragedy grounds the human stakes of his decisions.
Explore the full interactive character relationship map of Chernobyl