Angeli and others dressed variously as frontiersmen, bandits, soldiers or just wore MAGA hats when they overwhelmed police and forced their way into the Capitol.
It was a deliberate breach to interrupt Congress while it was in the process of counting state electoral votes to officially confirm President-elect Joe Biden's election victory.
Some Republicans have erroneously claimed the protesters, and Angeli in particular, are members of the far-left group Antifa.
Angeli, a regular protester outside his home state capitol in Phoenix, gave an interview to Arizona Central last year blaming the media for criticising Trump and inflating the dangers of coronavirus.
"I think it's important that the president of the United States knows … that there's good patriotic Americans who see things he's going through," Angeli told the newspaper.
"And are willing to stand up and say 'Hey man, I see what you're going through and I salute you, thank you for doing your job'."
Angeli said there had been "a lot of hysteria … that was completely unnecessary" about the world-beating number of US coronavirus cases.
Angeli turns up regularly in costume at pro-Trump events, baring his tattoos which include depictions of the president's Mexico border wall, and sometimes carrying a sign saying "Q Sent Me".
He has shouted at passers-by "You all know who Q is?" and explained Q "was a government agent who wanted to 'take the country back' from paedophiles and globalists."
- Additional reporting, news.com.au
