This thread is asking a simple but also complex question. What is the back story behind your character? What reason did they come to Los Santos? What are they doing now? What happened in the past that led up to who they are now?
I'll start it off:
After the events of what happened in Liberty City, Niko Bellic decided to move to Los Santos to seek the real American dream. Now, he's got the cars, women, money. Everything his cousin claimed he had back in LC. What could go wrong?