She is a henchwoman for the film's main villain Janus. Her defining characteristic is the fact she's a sadist, who gets sexual pleasure from killing people. Her favourite method is by squeezing the life out of her victims between her lethal legs, although she also enjoys gunning people down with machine guns.
Xenia is a skilled fighter pilot trained in the Soviet army. A expert spy and seductress she was able to use her skills to steal a high tech helicopter. Her skills with cars allowed her to keep up with Bond in a race. She is also a trained combatant and has an elusive fighting style in which she prefers to close in on her target and use powerfull takedowns and grappling techniques to overpower them. Her favorite technique is the legscissor, in which she wraps her legs around the torso and squeezes the air from the lungs.
Her first kill is when she seduces an Admiral in order to steal his ID, she kisses him violently, then bites into his chest. She then slams him down on the bed roughly, riding him in a manner that both enjoy, until she begins to crush his chest and lungs between her legs. She then flips over in bed and snaps her legs around him, crossing her feet at the ankles for more pressure. Clearly suffering and gasping for air, the Admiral tells Xenia he can't breathe, but his agony is only giving her evil pleasure. Xenia then crushes him to death, squealing orgasmically and thrashing her head about as she takes his life.
She later steals the Goldeneye weapon from a bunker in Siberia, before leaving she guns down all of the staff with a machine gun and is clearly getting sexually aroused as she slaughters them all.
Later on she tries to kill Bond in the sauna at his hotel. After some sexy, playful exchanges, Xenia gets her arms around Bond and kisses him, before pulling back with his bottom lip between her teeth. James forces her away, into a wall, to her arousal, before she kicks him down as he goes for his gun. Eventually underneath Bond after attempting to straddle him, she jokes playfully, stroking his face before they both get to their feet, and she forces him onto a stone bench, where she finally gets him between her legs. Nearly smothering him with her chest, she forces him back, and leans back herself, creating immense pressure on Bond's chest and lungs as she attempts to crush him, her toes curling with orgasmic pleasure. Writhing and grunting in pleasure, she slides her hands down his bare chest and leans back again, before bringing her head back up as he slaps his hands on her knees in a desperate attempt to escape. She climaxes, achieving orgasm, before being slammed into a wall by Bond. Kissing him again, she squeezes him, and ends up slammed into more walls, though she loves the rough treatment, and squeals madly, attempting to crush him and kiss him once more before he sets her ass on a steam grate, getting the upper hand.
The second time she tries to kill Bond is in the jungle where she gets the upper hand on Bond by dropping down onto him from a helicopter. There she kicks him about a few times before torturing him between her legs. Bond manages to attach the rope she descended from onto her belt and shoots down the helicopter she came from. This causes the helicopter to pull her screaming into a fork-shaped tree. She is struggling to breath and is thrashing both her arms and legs in pain. Just before the chopper crashes, she lowers her head and dies. An unfortunate, but ironic death.