He is an optimist, a fantasist, and a liar, and he brought Niko to Liberty City with false promises.
At the beginning of the game, Roman serves as your only friend and as your only connection in the story.
The first type of relationship is any that Niko has with various females he encounters.
These relationships take on a more light-hearted and pseudo-romantic tone and are completely optional for the most part.
However, that shouldn't daunt you from building as many relationships as you can, because they happen to provide some of the deeper and more rewarding experiences Grand Theft Auto IV has to offer.Ever since the Yugoslav Wars ended, Niko's main goal in life was to find and kill one of two men: Florian Cravic or Darko Brevic, for one of them betrayed and nearly killed him during the Wars.Niko is the younger cousin of Roman Bellic and the son of Milica Bellic. It was implied that his father was an abusive alcoholic.Each friend offers a 'special ability' in return for maintaining a good friendship.In order to unlock a friend's special ability, you must have a high 'like stat' for that friend, and this stat is based on how regularly you hang out with your friend.In fact, without building up relationships with myriad characters in the game, you're going to miss out on a lot of what the game intends for you to see.