"I look forward to serving both the president-elect as he works to get our economy moving again and the press to get what they need to cover that and other important stories," Gibbs told The Associated Press on Saturday.
During the presidential campaign, Gibbs, 37, served as communications director and was among the few who could frankly tell Obama what needed to improve.
He didn't hesitate to tell the media when he thought they got it wrong, either. He fiercely guarded Obama's image.
One critic called Gibbs "the bland face of brazenness" when he said Obama's decision to resign from his church amid the controversy over the Rev. Jeremiah Wright was "a deeply personal decision, not a political decision."
Others were surprised when he called Fox News' Bill O'Reilly a "bully" and asked Sean Hannity, "Are you anti-Semitic?" in response to the TV commentator's questions about Obama's relationship to William Ayers, a 1960s radical.
A former roommate who worked with Gibbs on Capitol Hill said Gibbs has been a successful press secretary because he combines top-notch political skills with a quick wit.
"That's the reason the Washington press corps is going to relate well to him," the roommate, Shar Hendrick, told the AP recently.
Gibbs was born in Auburn, Ala., where his parents worked for Auburn University. His mother, Nancy Gibbs, was active in the League of Women Voters and would take her son with her to polling places and the local courthouse. Political discussions around the dinner table were often lively.
Gibbs majored in political science at North Carolina State University, and got his start in politics in 1991 as an intern for former Rep. Glen Browder, D-Ala. Gibbs' wife, Mary Catherine Gibbs, is an attorney in Alexandria, Va. They have one son.
Browder recently told AP that he quickly realized Gibbs was not just another college student looking to spend a few months in Washington. Gibbs' ability to make a quick study of complicated issues convinced the congressman to give him a permanent job.
"Robert had a special quality even back then," Browder said. "In retrospect, it was clear Robert was destined to make his mark."
After Browder's unsuccessful Senate campaign in 1996, Gibbs worked for several Southern Democrats and for the Democratic Senatorial Campaign Committee. In 2004, he headed to Chicago to work in Obama's Senate campaign.
Obama's speech to the Democratic National Convention that year sent his fame and popularity skyrocketing. Afterwards, Gibbs frequently told reporters and political associates that he and others around Obama kept expecting the popularity to ebb, but it never did.
Gibbs was constantly with Obama over the next two years as he began laying the groundwork for a presidential bid. He was among the first to recognize the political phenomenon Obama had become, and the need to adapt and capitalize on the surging crowds he was drawing.
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