The relationship between Jaime and Cersei Lannister has never been one to look up to. The incestuous sister-brother duo has had their ups and downs over the course of Game of Thrones, but they have always held on to the love they feel for each other above almost all else. That could all be on the verge of changing thanks to Cersei assuming the Iron Throne at the end of Season 6 by killing literally everyone who could oppose her. They don't call Jaime a Kingslayer for nothing, so could Jaime kill his sister if he had to? Nikolaj Coster-Waldau thinks it makes sense.
People love to come up with theories for Game of Thrones and the extra long wait for Season 7 has only given fans more time to speculate what's going to happen. One popular theory is that it will be Jaime Lannister himself who finally kills Cersei -- an odd choice given their devotion to each other. While Jaime's morals have been on the rise throughout the series, Cersei's have plummeted and her reign as Queen will likely not be a bloodless one. With that in mind, Mashable asked Jaime actor Nikolaj Coster-Waldau if he thought the Kingslayer could become a Queenslayer.
I mean I don't think he --- I'm just saying it's a valid theory. I can see it makes sense, it has a beautiful --- it's a nice circle [that] they are born together in the womb and then he kills her at the end...It makes sense.
There's certainly a poetic justice to the whole thing. The two of them were born together and they'll likely be together when one of them dies. The two of them started on the same moral level (pushing Bran out of a tower) but they have since gone on separate paths, Jaime learning humility and Cersei...well, not really learning anything. Plus, Jaime killed the Mad King for his advocation of mass-genocide, so why would he support his sister when she actually does it?
However, just because the motivation is there, doesn't mean it's actually going to happen. As Nikolaj Coster-Waldau points out later, even the most logical theory is still just a theory until it happens.
You could say that could --- that the motivation for doing that would be the same for killing Cersei, but I haven't seen anything yet before Season 7 that would make me believe that he was capable of doing that.
Lots of characters are going to be gunning for Cersei now that she's on the Iron Throne and made enemies with pretty much every major character. While Jaime could be the one to finish her off, it could always end up being Jon Snow, or even Tyrion. We won't know until Game of Thrones Season 7 airs, beginning July 16, 2017, on HBO. To learn more what's hitting the airwaves this summer, head on over to our summer TV premiere guide.