When The Flash returns on Tuesday (8/7c, The CW), viewers will finally get to see what happened after Barry (Grant Gustin) accidentally opened up a wormhole above Central City. As if Team Flash didn't already have enough on their plate, what they really needed now was to open Central City up to all the dangers of Earth-Two.

So what does the introduction of multiple universes mean for The Flash? Will we get to see Vibe and Killer Frost this season? See what co-executive producers Todd and Aaron Helbing revealed below:

How will Barry be changed by everything that happened in the finale?

Todd Helbing: That was a monumental experience for him. The way he's dealing with it is he's a little afraid of getting everyone brought into the fold and harmed. He's sort of taking everything onto his shoulders, so I think you're going to see him more determined than ever to keep Central City safe, especially his friends and family.

Aaron Helbing: After losing Eddie, it really has stuck with Barry all these months. So he wants to make sure nobody else gets hurt again.

Cisco (Carlos Valdes) has now learned he has meta-human abilities. But unlike Barry, who had a lot of fun with his powers, Cisco seems afraid of them. How are we going to see Cisco handling this?

Todd Helbing: His whole reaction to it is, "Harrison Wells was an evil guy. An evil guy gave me powers." So he's struggling with that idea of, "What is this actually going to mean for me?" Also, Barry's powers were very easy for Barry to understand. It's like, "I was struck by lightning. Now I can run really fast." Whereas Cisco's are more of a dreamlike nightmare at first. He's seeing things he doesn't want to see and he has to come to grips with that and learn how to control it.

You won't have to wait long to see Cisco's powers again

This season is introducing Earth-Two. How are much will we get to see of that world and how will multiple universes be incorporated into the show?

Aaron Helbing: I think we'll probably tease Earth-Two for a little bit, but then further down the road it's something that we definitely plan on exploring.

Todd Helbing: We'll definitely see meta-humans from Earth-Two coming over and posing a threat to Barry and our team. But we will definitely explore Earth-Two as much as we can.

Does this mean it's possible that we will come face-to-face with alternate versions of Barry and the team?

Todd Helbing: Listen, we're dealing with doppelgangers so that's certainly a possibility.

We did get a glimpse of Caitlin (Danielle Panabaker) as Killer Frost in the finale. Could we see that version of her this season?

Aaron Helbing: When we see her, she's in the speed force and the speed force has no exact time frame. It's definitely something we've talked about. Everyone's meta-human powers manifest at certain times. Right now, we're exploring Cisco's.

The Flash: Get your first look at Zoom!

The premiere introduces Jay Garrick. How will he change the dynamic of the group?

Todd Helbing: He provides something that Barry's never really had before, as being a mentor who was also a speedster. So unlike Harrison Wells teaching him how to be better and faster and improve his powers, he's actually had them.

Aaron Helbing: We also played with the dynamic last season of Barry having three fathers. And so we really wanted to explore the older brother-younger brother relationship between the two.

Zoom is this season's big bad. What separates him from all the villains we've seen before?

Aaron Helbing: I don't think we've seen a villain as evil as Zoom. Last season we had seen Reverse Flash, who was obviously Wells/Eobard Thawne, but he also grew to have this affinity towards Barry. Whereas with Zoom, this guy is just evil incarnate.

What's motivating Zoom?

Todd Helbing: He just wants The Flash dead.

Aaron Helbing: There can only be one true speedster, and Zoom has to be the best.

Barry and Iris (Candice Patton) have been through a lot. What does their relationship look like now?

Todd Helbing: Obviously, with Eddie's death she's reeling from that. And so while Iris has always been Barry's lightning rod, Barry's become that for Iris. You get to see a lot of their friendship and how they help each other through this time.

The Flash premieres Tuesday at 8/7c on The CW.

(Full Disclosure: TVGuide.com is owned by CBS, one of The CW's parent companies)

VIDEO: On the Set of The Flash: Take a tour of S.T.A.R. Labs