Were building towards a confrontation between Barry and the Reverse Flash, executive producer Andrew Kreisberg tellsEW.

However, it sounds like viewers wont find out Reverse Flashs identity anytime soon.

Hes vibrating, so he doesnt know who he is.

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Credit: Diyah Pera/The CW

We dont see his face.

So, who is the man behind the mask?

Cosnett, the (too?)

obvious choice, does his best to avoid answering any questions that may incriminate him.

The thing about this show is we always want people to be surprised, he says.

We just dont want any plotlines getting out before the episode comes out.

So, has it been hard for the actor with the mounting pressure of fan expectations?

Not really, he adds.

I just wanted to make him a human being, first and foremost.

Then, from there, its fascinating to see how that progresses.

Ive heard so many theories surrounding Reverse Flash that are all interesting.

Anyone who thinks they know whats going on is wrong.

The show has to appeal to everybody.

It cant just appeal to comic fans and it cant ignore them either.

But Barry wont be alone in this fight.

Episode 9 is really cool because its everybody coming together to help, Kreisberg says.

It becomes an interesting new combination of characters.

When you finally see everybody confront him, its really scary.

Its certainly the scariest thing weve done on the show.

You should all be that scared.

But allowing everyone in on the action also means theyre all in the line of fire.

Reverse Flash, in terms of his powers, has such a potency about him, Valdes says.

The magnitude of these powers is so hazardous and so dangerous that its a real threat for these characters.

The Flashairs Tuesdays at 8 p.m.

ET on The CW.