I just watched episode 10 of this series (which I highly recommend) again and I noticed something. This anime makes a lot of references to popular movies or shows but this one, if intended, wasn't too direct. And you can't deny. This looks like or is Guile. Look at the hair, that hamburger, and the DOG TAGS MAN! THE DOG TAGS!!! Maybe that's Abel too!
In case you're interested in the clip from which these came, check out the music video below!