Steve Bannon has been named President-elect Donald Trump's chief strategist and senior counselor.
Here are 11 things you need to know about him:
1. Before he joined forces with Trump, Bannon was executive chairman of Breitbart News.
2. When Bannon was named CEO of Trump's campaign in August, social media immediately went wild (see choice tweets below).
3. Bannon stepped down from his role with the ultra-conservative news site to work full time on Trump's campaign.
4. His position was designed to bolster the "business-like approach" of the organization, according to a press release.
5. A polarizing figure, Bannon is a former Goldman Sachs investment banker known for his conservative views.