Although little is known about him, he used to work with the Russian government assigned to the science staff who kept Tia for experimentation. He was most likely Tia's caretaker throughout her captivity, spending every moment together as he did his job. Over time, Tia developed feelings for Boris which turned into a positive relationship. Boris then helped her escape captivity.
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Personality[]
He appeared to be always trustworthy, never being suspected of anything that would go against his superiors. According to Tia, he was the only human who truly cared about her despite the fact that she is a mermaid.
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Physical Appearance[]
He appears to be of average size, with a short haircut and brown eyes.
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In "Til Death Do Us Part", Boris and Tia reunite at a hotel in Vladivostok, he was very happy to see her again. He mentions that Alexei has been suspected to have been involved with her escape while he remained innocent. Tia tells him to meet her in her hotel room, they share a moment of intimacy. Tia encourages Boris to tell the truth, he confesses that Alexei did weaponize her Siren Song and that he could not be able to prevent him from doing so. Unfortunately for Boris, Tia deems him useless and chokes him to death.
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She was Boris' lover. During her 10 years in captivity, she saw how kind he was to her eventually forming a relationship. She was able to escape to freedom, while Boris got off scot-free from the consequences. When she learns that Boris could not prevent her Siren Song from being weaponized, she asphyxiates him in the hotel room. Even though Tia killed him, her feelings for him were true.
Given the fact that he was suspected to have helped Tia escape, he was forced to work 20 hours a day under intense surveillance. Prior to Boris and Tia's reunion, we can assume that Alexei was not on good terms with Boris.
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Trivia[]
There are two reasons why Tia choked Boris to death: to prevent the Russian government from learning of her whereabouts and the fact that he was unable to prevent Alexei from weaponizing her Siren Song.
It is possible that Boris also got away with stealing the audio files of Tia's song.
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Quotes[]
“
Work him 20 hours a day, like a gulag inmate. Watch his every move.
”
— Boris describing Alexei's current situation
“
I've dreamed of this since I came to Berzin
”
— Boris to Tia
“
Yes. Alexei made a weapon from it. I'm sorry. I would have stopped him if I could.
”
— Boris' last words before death
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