Niko Bellic is a fictional character and the protagonist of the video game Grand Theft Auto IV. He is a Serbian immigrant who arrives in Liberty City seeking the American Dream and to escape his troubled past. Niko is known for his complex personality, shaped by his experiences in the Yugoslav Wars and his desire for revenge against those who wronged him. Throughout the game, Niko navigates the criminal underworld, forming relationships with various characters, including his cousin Roman Bellic. His story explores themes of loyalty, betrayal, and the pursuit of happiness in a harsh environment. Niko's character has been praised for his depth and realism.