dariop
You're kidding, right?
They didn't just "beat him up", they beat his nephew into a coma and it took him 3 days to wake up in the hospital (that's attempted murder by the way).
You clearly missed the part where Boris is a mob boss (probably the Bratva). An attack like that against a member of his family requires a response. Add to that the fact that his little girl was targeted just a little while before this and he might be thinking these people are responsible for that too, but either way, he's not exactly a happy camper right now.
Also, they're in a mob war. Everyone that got killed was an enemy soldier. These weren't Girl Guides he was stabbing, they were the enemy and would have happily killed him, his family, and his friends.
He isn't a psycho by any means, and he can be talked down by the MC before he literally screws whatsherface's eye socket.
He's cold, calculating, and probably a "sociopath" as far as society is concerned since it likes to shove that label on people like him. He's also the kind of guy who will sit down and tease his daughter at breakfast, cuddle with her on the couch, and accept her new boyfriend into his home.
Dude isn't about to go all Hannibal Lecter and try to eat your liver "in an act of rage".
