We've already seen Zoom's dungeon before, the place he has Jesse Wells locked-up, but we get an extended look at the place here, as Barry Allen becomes the latest inmate (in fairness, he should know a thing or two about locking people up illegally, although at least it's villains he's capturing). While we got to see Jesse again, there was a new character here as well. Someone in a black mask, banging on his cell. Er, who on Earth (any of 'em) is that? The mask looks a little bit like Diggle's, though not so much you could definitely say it was him, and that would be quite a random twist (though so was having Deadshot, so who knows!?). Based on who we didn't see in Earth-2, could this be Eddie Thawne? Or someone else entirely?