A day after acknowledging that former President Bill Clinton will have a prime speaking slot at the Democratic National Convention, organizers are rolling out more names in its lineup for the Charlotte event.

First lady Michelle Obama will open up the convention on Tuesday, Sept. 4, while San Antonio Mayor Julián Castro will be the first Latino keynote speaker at a national Democratic convention.

“Having both the First lady and Mayor Castro speak on the opening night of our convention will bring together two incredible leaders whose life stories both embody the promise of America – that if you work hard and play by the rules, you can make it,” Los Angeles Mayor Antonio Villaraigosa, the chairman of the convention, said in a statement.

“As mayor, Julián Castro has worked tirelessly to move San Antonio forward by building its economy from the middle out – not the top down – by putting the city on a path to being a leader in the new energy economy and making innovative investments in education to prepare San Antonio’s students for the jobs of the future,” Villaraigosa said. “That’s the same vision forward for the middle class the president has.”

Before Clinton takes the stage Wednesday night, Elizabeth Warren, who led the creation of the Consumer Financial Protection Bureau, will address the convention.

In the aftermath of the 2008 financial crisis, Warren chaired the congressional panel that oversaw TARP, the Troubled Asset Relief Program. She is credited with building the structure and organization of the consumer protection bureau to hold major financial institutions accountable and to protect people from financial tricks and traps often hidden in mortgages, credit cards and other financial products.

“Elizabeth Warren has championed the protection of the middle class throughout her life,” Villaraigosa said. “At President Obama’s side, she helped level the playing field for all Americans and worked to make sure that everyone from Wall Street to Main Street plays by the same set of rules."