One of the interviewers was Nathan Osburn, who worked for the Office of Public Affairs at the Commerce Department under the Obama-Biden administration and at the Small Business Administration.
Osburn's profession was listed as "communications" on a graphic and his home city was listed as Philadelphia.
Another questioner was Mieke Haeck, who ABC identified as a physical therapist from State College, Pa.
Haeck is also the wife of Ezra Nanes, who in 2018 ran for Pennsylvania state Senate Republican Majority Leader Jake Corman. Names is currently an at-large member of the Centre County Democratic Committee.
Names praised his wife's appearance at the town hall on Twitter.
"Our children and I are so proud of our @MiekeHaeck for her courage in asking this question of @JoeBiden and so grateful to our next President for his caring and decisive answer in support of transgender and all LGBTQ people," Nanes wrote.
When reached for comment, ABC News misled statements by town hall moderator George Stephanopoulos at the beginning of the event.
"Some are voting for [Biden], some have said they're voting for President Trump, some are still undecided, and we're going to try to take questions from as many as we can tonight," Stephanopoulos told viewers.
ABC News declined additional comment.
"BUSTED! Questioner from Biden Town Hall on ABC Was ‘Former Obama Speechwriter" Sean Hannity, a TV host wrote on his personal Twitter account.
How long will they keep throwing soft-balls at Biden when Trump is playing in the real game?
Biden's campaign reached Osburn and Haeck for comment and did not immediately receive a comment.
Stephanopoulos, who was previously a communications director for the Bill Clinton White House, was also slammed for neglecting to ask Joe Biden about the critical report about Hunter Biden, his overseas business dealings and their possible link to his father, then-Vice President Biden.
This isn't the first time ABC was grilled over one of its town hall events. Last month, it was reported that at least two of the so-called "uncommitted voters" who participated in its town hall with President Trump had engaged in liberal political activism or condemned the president on social media.
One of them, Kutztown University professor Ellesia Blaque, who criticized President Trump on the subject of health care, expressed her intention to volunteer for Kamala Harris' presidential campaign in a January 2019 tweet.