By now, you should know to never get too attached to any of the characters in "Game of Thrones"/"A Song of Ice and Fire."

Author George R.R. Martin is in the process of writing the two final books for his "A Song of Ice and Fire" series, and most likely, readers should expect some of their favorite characters to be killed off in the upcoming books (via Variety).

BuzzFeed reports that at a recent London event, someone asked Martin if there were any characters he couldn't kill because they're needed for the plot. He responded:

"I have a large number of important characters who I switch between to tell the entirety of the story, and that limits who I can kill. Sometimes there’s only one character who’s my eye in a particular location, and if I kill that character everything going on in that particular subplot is going to be lost. The way my books are structured, everyone was together, then they all went their separate ways and the story deltas out like that. And now it’s getting to the point where the story is beginning to delta back in. The viewpoint characters are meeting up with each other and being in the same point at the same time…Which gives me a lot more flexibility for killing people."

So, which character do YOU think Martin should (or will) kill off next?