The Real Thing
An Atlanta, Georgia based hero.
The Real Thing is described as 'looming over the city [of Atlanta] and swatting Enelsian ships out of the sky. That would infer he, she, or it, as being some sort of large monstrous creature.
Since both are Atlanta, Georgia based, the name is no doubt a tongue-in-check reference to one of the many Coca Cola Company's slogans starting with 1969's "It's the Real Thing."
A fan question posted on creator, Kurt Busiek's website, hints at the connection and explains why we will probably never see The Real Thing on-panel.