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Georgui Kasaev is a Russian-American actor, stunt performer, and former professional mixed martial artist who has established a specialized niche in Hollywood as a high-intensity character actor. A former trick rider for the Moscow Circus, Kasaev transitioned from a career as a fighter—holding black belts in Tae Kwon Do and Brazilian Jiu-Jitsu—to the film industry, where he has utilized his extensive combat expertise for both acting and stunt choreography. He is perhaps best recognized for his roles in major television productions, including playing a Russian officer in Netflix's Stranger Things and appearing in series such as MacGyver, True Lies, and Leverage: Redemption. In 2025, his visibility increased within the Marvel Cinematic Universe with a credited role as a Russian operative in the blockbuster film Thunderbolts*.
The story follows a team of pirate mercenaries known as the Lagoon Company, that smuggles goods in and around the seas of Southeast Asia in the early to mid 1990s.[4] Their base of operations is located in the fictional harbor city of Roanapur in east Thailand near the border of Cambodia (somewhere in the Amphoe Mueang Trat district, likely on the mainland north/northeast of the Ko Chang island or on the island itself).[5] The city is home to the Japanese Yakuza, the Chinese Triad, the Russian mafia, the Colombian cartel, the Italian mafia, a wide assortment of pickpockets, thugs, mercenaries, thieves, prostitutes, assassins, and gunmen. The city also has a large Vietnamese refugee population following the Vietnamese refugees exodus after the Communist takeover of Vietnam in 1975. Lagoon Company transports goods for various clients in the American made 80-foot (24 m) Elco-type PT boat Black Lagoon. It has a particularly friendly relationship with the Russian crime syndicate Hotel Moscow. The team takes on a variety of missions—which may involve violent firefights, hand-to-hand combat, and nautical battles—in various Southeast Asian locations, even going as far as Phu Quoc island of Vietnam. When they are not working, the members of the Lagoon Company spend much of their down time at The Yellow Flag, a bar in Roanapur which is often destroyed in firefights.
