Shayera Hol is Hawkgirl, in various incarnations the reincarnated wife of Carter Hall, Hawkman.
Shayera Hol or as she known to the people of Earth, Hawkgirl was a Thanagarian military officer and one of the founding members of the Justice League.
Shayera was a founding member of the team and one of the original seven until quitting after The Thanagarian invasion of Earth, though she did return to the League but did not call herself Hawkgirl anymore and went by her real name instead. When she returned she no longer wore her original costume either.
She was present with the rest of the Justice League at the Cadmus headquarters after Young Justice's battle with Blockbuster.