Board Thread:Young Justice News/@comment-3974095-20170209201908/@comment-3974095-20180519003323

I doubt that our mystery girl is Halo. I'm not familiar with the character, but her costume—essentially her signature—is too distinctive. There are even visual hints of Geo-Force's original dopey costume in his redesign; Phil Bourassa has always maintained a degree of homage in all his works. Not even Wotan, a straight-up Z-lister, looks much different from the comics.

Now, with that out of the way, I'm gonna go with her being Solstice. The headwear looks... cultural, almost. But I don't know much about her either so that's just an ignorant insinuation.