she is a government agent
Roman gives Niko a cell phone within the first 3 missions of the game.
Niko Bellic is NOT from Russia. His home country is never specified, but the language he speaks is Serbian and he is definitely from Eastern Europe. His home was at one probably part of the USSR, but once again, NOT Russia. Yugoslavia is the general consensus.
By jacking a cop car, Niko can access the cop computer (instructions on screen) to find names of criminals to hunt down in vigilante mode, and gain a reward.
No, not in ordinary gameplay. In GTA IV you are Niko Bellic, and that does not change. However, I do not know if there are mods to change Niko into something else, you would need to have a look at dedicated GTA sites like gtawiki, where there is a comprehensive modifications section for mods that can be downloaded via computer.
No you cannot, sadly! But you can swim in Grand Theft Auto 'San Andreas'.
Unlike GTA San Andreas, where CJ could buy a ticket and fly to various airports; GTA IV does not have the same ability. But Niko can always "borrow" a helicopter and fly himself to the various islands of Liberty City.
Niko is Niko also in Samoan.
Niko Niko's was created in 1977.
NO
There are various things that Niko can pick up and throw in GTA IV; things like mobile phones, cameras, rocks and bricks, and....coffee cups. He doesn't seem to be able to pick up things like discarded hot dogs and the shopping that some of the peds drop. The nearest you can get to throwing food seems to be the full cups of coffee peds sometimes drop when Niko bumps into them. You can get him to pick these up and throw them at the litter dropping ped. It usually clips them on the back of the head, and they either run away or throw a punch at Niko.
Niko Novick's birth name is Niko Stjepanovic.