Iwan Rheon says the upcoming battle with Stannis is at the top of Ramsay's list: "I don't think anyone would be able to keep him off that battlefield."

It's time to unleash Ramsay (Iwan Rheon).

Ramsay has proven his value to his father, Lord Roose Bolton (Michael McElhatton), multiple times, most notably when he compelled Theon/Reek (Alfie Allen) to dress as Theon and order his father's men to open the gates to Moat Cailin. And his father will call upon Ramsay again in the coming battle with Stannis (Stephen Dillane), who marches from The Wall to take Winterfell.

Ramsay's pending nuptials to Sansa (Sophie Turner) potentially make her a target of his cruelty, though Rheon believes Roose would frown upon physical violence toward her because of the value of her birthright to Winterfell.

In a conversation with The Hollywood Reporter, Rheon discusses the upcoming battle, Ramsay's twisted relationship with Myranda (Charlotte Hope) and what's next for Reek.

Ramsey "forgave" Reek in the last episode. Is Reek still very much in danger?

Of course. That was a quite rare, sort of one-off. In a strange way, he did punish him, didn't he? In a really dark way, by parading him in front of Sansa. Ramsay was like, "Oh! I'll do that instead then." He probably had a plan of when they were going to meet and probably decided, "I'll do it this way instead."

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Will his torment of Sansa be strictly psychological or could it get physical?

Ramsay is incredibly unpredictable. The answer to that is probably both. He is a horrible human being. He's capable of anything, really. Because of who she is, I don't think Roose Bolton will stand for too much slapping around. I think the mental side of it will be horrendous. That's going to be the difficult bit.

Is he satisfied with Roose's speech proclaiming him his son, or will he try to kill his father's baby?

In this world you have to look at every possibility. In the moment, it was very emotional for him to hear his father say that. He's been wanting that all his life. It's quite a special moment for him. As time goes, he has to be ready for every eventuality, and he's an intelligent guy. He thinks a lot. He's very tactical. He's planning what he's going to do. Although he seems quite wild and irrational, he's actually a little bit smarter than he lets on.

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Is he a big asset to his father with this coming battle or does his unpredictability make him a liability?

He's a great asset. Roose will want to keep a leash on him, but he's got the gift of ingenuity. He's a very clever young man, so having him around is always going to be an asset.

Will we see him on the battlefield?

I don't think anyone would be able to keep him off that battlefield. That's literally the best day out in the world for him.

What is going on with him and Myranda?

Myranda is his plaything, companion/lover. His entertainment. He keeps her about because she's a bit crazy as well, and she goes along with him. She's his little sidekick in a way. He says, "You're not going to bore me," and I think that means, "If you bore me, you're dead." I don't think he'd think twice.

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How do you prepare to get into Ramsay's head?

I just spend a lot of time with the script and to try to get the best sense of the character. I know it sounds really actor-y — but finding the truth in what you are doing. You can't approach it from a place of logic, because his thinking is always going to be slightly off. So you have to find what he's thinking and try to make it sound and look as real as possible.

You have to do all sorts of terrible things to Alfie Allen onscreen. How do you maintain that relationship?

We both respect each other as actors and we approach it as any professional actor should. You get on set and you do the work. You just don't let it get to you. You can go for dinner afterwards and have a chat. Shoot some pool or whatever. Then it's all over. You can talk about it over a beer, and then it's done and on to the next scene.

Last week you had an incredibly tense dinner scene. What was the key to getting that right?

It was one of those scenes when you read it, and it's like, "Thank you so much for this scene" as an actor. It's wonderfully written; there is so much going on in it. There are so many different ways you could play it. It was really exciting to shoot. It was difficult. It was a long day and it was difficult to keep the focus up. Especially for Ramsay, who is talking quite a lot. It was great because the fake wine is this lovely grape juice. I used to have it as a kid, so I really love drinking it. It was a really amazing scene to be a part of.

Game of Thrones airs Sundays at 9 p.m. on HBO.