Yuri boyka (character) - biography, Yuri boyka is a russian male sent to prison for 1st degree murder. during his time in prison he became the prison fighting champion as well as made a reputation for.Yuri boyka - undisputed 3 - by patrickbrown on deviantart, Boykaaaaaaaa!!! haha one of my favourite movies, it's one of those ones that isn't very well known but is very good here is a screen from the movie yuri. The most complete fighter : yuri boyka - department of, But he was not the only champion we had. we had our very own yuri boyka, a man hard to define. a man or rather to call him an animal more violent then me.