EXCLUSIVE: 'Pretty Little Liars' Star Janel Parrish Dishes on the Spaleb v. Haleb Shakeup and Mona's 'Sneaky'

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Make way for Mona!

Pretty Little Liars' original 'A', Mona Vanderwaal, has always been one of our favorite troublemakers on TV, and now it's time to find out what's next for the drama's sneakiest and snarkiest character.

PLL star Janel Parrish recently stopped by the ETonline studios and she dished exclusive details on "Uber A," Mona's next moves, and which little liar should really be with Caleb.

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For the past six seasons we've watched these girls get harassed over and over again, and now there's a new mysterious text message tormentor. What makes this 'A' different than all the others?

Janel Parrish:
This is a new situation. This Uber A is actually going to be even more dangerous than [Mona] or Charlotte, so we've got new twists and turns, in true Pretty Little Liars fashion, coming your way.

Based on the most recent episodes, many fans are already thinking that this "Uber A" is another girl…

I love hearing everyone's theories! I can't say anything, obviously, but you will find out soon enough who it is and I think it's a pretty good shock.

So you already know who Uber A is?

I mean, I have a pretty good idea. [Laughs] Our writers are always pretty secretive and they don’t always right out tell us, which is good because in interviews I don’t have to lie. I can just be like, 'I don’t know who it is,' but I can say that I have a good idea.

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Do you think that Mona has it in her to play the game again? Could she be Uber A?

I think Mona has it in her to do anything that Mona wants to do. That's the interesting thing about that character and that's why it's so fun for me to play her because she can do anything she puts her mind to. She's extremely smart, she's very sneaky, and we all know what she's capable of. You never really quite know what her motives are -- I never know what her motives are! So, as an actress, I have a really good time playing that.

That actually leads me to my next question: So, what are Mona's motives this season?

Oh, man, that's the number one question with her, isn’t it? I think that this season you see that Mona is still Mona, but it, ultimately, is five years later and she still wants to connect with these girls. She very much wants to be a part of them. They went through something crazy together and even though she still has her Mona-ness -- her Mona-isms -- ultimately, I think that she does want to help. [She] does want to figure out what's going on and who's doing this to them because she's a part of it too -- it's happening to her as well. It's like a whole new Rosewood vibe this year.

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Now let's switch gears a little bit and jump aboard the ships of the show, because we've had some shipping shake-ups this year. What are your thoughts on Caleb and Spencer together as a couple?

I will give you my opinion and I've actually been pretty open about this on Twitter: I'm not for it. The reason why is I am a huge Haleb fan. I love Haleb. I think they're such a sweet couple, and their chemistry on camera is just amazing, so when I heard that they were going to be with Spencer and Caleb, I was like, 'No, he's supposed to be with Hanna! It's meant to be, they've been through so much!' So I'm rooting for Haleb. I think that the vulnerability that they both brought out in each other was just so sweet and I just feel like Caleb and Spencer just feel so buddy-buddy. I'm like, 'No, bring back the fire! Give me Hanna and Caleb all day!'

Now for the really important question: When is Mona getting another love interest?

I know! I'm still all for Mona and Mike. I thought that was such a sweet relationship and it was really the only time since nerdy Mona that you saw a vulnerable Mona. We've seen it here and there, but that was really the only time that you really saw her care about somebody so much and in a relationship. Unfortunately, Cody is on another show right now, which is why we are not able to have that relationship, but I'm really rooting for it! If we can get him back, I'm all for Mike and Mona or just love in general. Mona deserves happiness.

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Looking ahead to the rest of season six, what should PLL fans be prepared for?

Oh, man! It's just going to get crazier. We always have twists and turns and our finales are always explosive. I honestly feel like the season six finale is the biggest shock that we've ever had on this show. I'll leave it at that, but it's really good.

Pretty Little Liars airs Tuesdays at 8 p.m. ET/PT on Freeform, the new name for ABC Family.

Are you rooting for Haleb or Spaleb? Who do you think Uber A is? Share your thoughts with @LeannneAguilera on Twitter!