“Zoom’s identity has been revealed: He is Hunter Zolomon, a.k.a Jay Garrick. How all of that plays out and what’s actually happening, we’ll leave for after the break, but we wanted to go out on this run of episodes with a big reveal, just the same way we did at the end of episode 9 in season 1, where we revealed that Harrison Wells was the man in the yellow suit. Zoom’s identity is finally revealed.
“It’s an even larger betrayal than last year in some ways, because they’re all going to feel like they should’ve been inoculated against it. ‘Fool me once, shame on you, fool me twice, shame on me.’…They let this person in. Part of the reason he was able to do that was because there was a hole in the center of their group, and he knew that. He was able to step in because they wanted it so desperately. Barry was missing his mentor, Wells, and here comes Jay offering to be his mentor. Caitlin had lost Ronnie, and then here comes Jay offering to be her new knight in shinning armor.”
Kreisberg also addressed the irony that the one character, Earth-2’s Harrison Wells, who said not to trust Garrick, was the one that the rest of the team didn’t trust.
“For us, there was all of this great, delicious irony to the whole thing. It happens in a way that didn’t make them look stupid, that the reason he was able to manipulate them was because he was playing on their emotions. It wasn’t because they were gullible. They actually took precautions in the beginning — Barry locked him up right away — but all of them had that need for a center and for a new star to right their ships by. Jay’s one charming, smooth guy and he was able to manipulate them in that way.”
He also offered a tease for the mysterious man in the mask locked up in Zoom’s lair, saying:
“The identity of the man in the [iron] mask is, in some ways, probably an even bigger surprise than this one, if you can imagine it. It’s a new mystery to pull you through the season. Barry swore he wasn’t going to leave him behind. Something tells me Barry’s going to make good on that promise.”