Who is Ashley Williams, the longtime Biden aide grilled by House GOP investigators Friday?

Former White House aide Ashley Williams is the latest ex-Biden administration official to appear in the House Oversight Committee’s probe.

Oversight Committee Chair James Comer, R-Ky., is investigating allegations that Biden's former top White House aides covered up signs of his mental and physical decline while in office, and whether any executive actions were commissioned via autopen without the president's full knowledge. Biden allies have pushed back on those claims.

Williams is the third member of Biden’s White House inner circle to show up, though she said nothing to reporters on her way into the room late Friday morning nor during a brief lunch break in the afternoon.

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Ashley Williams, former deputy director of White House Oval Office operations, is speaking to House investigators. (Al Drago/Bloomberg via Getty Images)

She’s a longtime Biden ally whose time with the Democrat goes back to assisting then-second lady Jill Biden during the Obama administration, according to a 2019 profile of Biden staffers.

Williams later worked for both Biden’s 2020 campaign and presidential transition team. She served as his trip director before being hired to the White House as deputy director of Oval Office Operations and a special assistant to the president.

Williams ended her White House tenure as deputy assistant to the president, senior advisor to the president, and director of Strategic Outreach, according to her LinkedIn page.

She's a longtime aide to former President Joe Biden. (AP Photo/Jacquelyn Martin, File)

Notably, the social media page also says Williams still works for the ex-leader as senior advisor in the Office of Former President Joe Biden.

Williams is a graduate of Georgetown University, and received a doctorate of Law from the University of Pennsylvania. She also got a Master’s degree in political management from George Washington University.

She was subpoenaed by the House Oversight Committee last year in Republicans’ investigation into Biden’s cognitive health, but GOP investigators say the White House blocked her from giving any information.

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House Oversight and Accountability Committee Chair James Comer is probing whether Biden's mental fitness for office was obscured. (Anna Moneymaker/Getty Images)

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"The Biden White House obstructed the Committee’s investigation and refused to make the aides available for depositions or interviews," the committee said in a press release this year.

Williams’ Friday appearance was not forced under subpoena, however. She appeared voluntarily for her closed-door transcribed interview.

The Trump White House waived executive privilege for Williams along with several other former Biden aides last month.