Investors are bracing for Facebook's (FB.O) Wall Street debut on Friday after the world's No.1 online social network raised about $16 billion in one of the biggest initial public offerings in US history.
Here is a look at some of the personalities behind the world's largest social network.
1. Mark Zuckerberg, chief executive and co-founder
Zuckerberg, portrayed as a brilliant, ambitious and ruthless empire-builder in the 2010 movie "The Social Network," founded Facebook with Chris Hughes, Dustin Moskovitz and Eduardo Saverin while at Harvard University in 2004.
The 27-year-old frontman, who has repeatedly said he was in no rush to go public because that might distract employees and dilute his control, decides the direction and product strategy of the company.
Forbes estimates Zuckberg's net worth at $17.5 billion, making him the 14th richest man in the United States.
Images: Reuters, AP, Facebook