HeroesTheSeries.com reader Hero (who has been doing an awesome job tracking the Easter Eggs in the graphic novels, BTW) discovered that the link to the PDF version of tomorrow’s volume of the graphic novel series (#28, War Buddies - Part 5 of 6) is live and downloadable. In this volume it is finally revealed just who Austin and Dallas are at the end. Since we ARE a spoiler site, I’ve taken the liberty of giving you the answer right below with a nice screenshot:

VIEW THE ENTIRE ISSUE HERE

Source: Hero at HeroesTheSeries.com