Cole White, who used to work at a hot dog restaurant in Berkeley, Calif., "voluntarily resigned" on Saturday after his employer confronted him about his participation in the event, according to the Berkeleyside news site.
The Twitter account, which has 291,000 followers, is operated by Logan Smith, a journalist.
The account identified Peter Cvjetanovic, a 20-year-old University of Nevada, Reno student, as one of the participants in the rally, which culminated in the death of a woman after a man drove a vehicle into a crowd of counter-protesters.
Of the now infamous photograph of himself attending Friday's march that circulated widely on social media, Cvjetanovic said he "did not expect the photo to be shared as much as it was".
Another man outed on Twitter, college student Peter Cvjetanovic, told KTVN in Reno he's "not the angry racist they see in that photo".
The calls to have the white nationalist protesters - many of whom were young men - punished for their role in the rally is likely to add fuel to debates about free speech, especially on university campuses.
In an interview with CNN affiliate KTVN, Cvjetanovic acknowledged he attended the rally to protest the city's planned removal of a statue of Confederate general Robert E. Lee. "It is not ideal; there are flaws to it, of course". However, I do believe that the replacement of the statue will be the slow replacement of white heritage within the US and the people who fought and defended and built their homeland.
Cole White was identified as one of the alt-right protesters at the violent Unite the Right march on Twitter by user Yes, You're Racist.
"I have received death threats", said Cvjetanovic, who plans to report to the Reno Police Department at least five instances that he feels are legitimate threats.
One person was killed after a vehicle mowed down a group of protesters in the city of Charlottesville on Saturday while the two other victims, Virginia State Police Department officers, died when a helicopter crashed nearby, reports The Hill magazine. "These movements do not represent our values as a university", the university's president Marc A. Johnson said in the statement.
Photos of Cvjetanovic protesting circulated on social media, denouncing Cvjetanovic as a racist. I went to the Trump rally as a Nazi and they kicked me out and disavowed me. People like him, he said, "just want to preserve what we have".
Cvjetanovic was one of the frothing racist bros who was photographed at Friday night's tiki torch rally ...
Numerous people it named had publicly declared their plans to go to Charlottesville.