Warning: Spoilers ahead if you have not watched Sunday's "Game of Thrones" episode.
Season six of "Game of Thrones" is officially halfway over. The killer fifth episode, "The Door," aired Sunday and brought many fans to tears with a heartbreaking ending.
We saw Bran learn about the White Walkers' history, Sansa call out Littlefinger for all his mistakes, and a new mysterious Red Priestess named Kinvara.
But, as usual, there were some hidden details and information that might have slipped by you upon first viewing.
Scroll down for a look at the five things you probably missed.
The man we saw transformed into the first ever White Walker has been onscreen before.
We finally know where the White Walkers came from — the Children of the Forestcreated them. But that man tied to the tree isn't transformed into an ordinary White Walker. Actor Vladimir Furdik (above) normally wears prosthetics onscreen, so you likely didn't recognize him in Bran's vision. Guess who he plays?
The Night's King! Here's how Furdik looks with all his White Walker makeup and prosthetics on:
"The Night's King was sort of the embodiment of absolute evil," producer D.B. Weiss said in a feature after the episode aired. "What you're watching is the creation of this absolute evil, so the absolute evil isn't absolute after all."
So we now know the Night's King was the first White Walker, created millennia ago by the Children. And though he appears to be pure evil, there was once an innocent man underneath that icy facade.
Speaking of the Children, this spiral pattern has been seen before.
During the scene when the Night's King was created, the camera zoomed out to reveal a spiral pattern of rocks surrounding an ancient weirwood tree. According to showrunner David Benioff, this is one of the "ancient symbols of the Children of the Forest used in their rituals."
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