With one episode down and just five to go, we're closer than ever to seeing if the Night King on Game Of Thrones succeeds in his mission to kill everything in sight.

Seven seasons in, though, we still know very little about who he is and what he wants. Does he have a plan? Who is his main target? Who was he before he was the Supreme Leader of the Army of the Dead?

Well, the arrival of the first episode on Sunday may have just solved the last question for us! After 'Winterfell' aired, social media blew up with an intriguing theory that may expose the icy baddie's identity.

To understand it, we first need to back up to the episode where Bran (AKA: the Three-Eyed Raven) has a flashback that teaches him how the master of the White Walkers was created.

In case you don't recall, the Night King was captured by the Children of the Forest and Leaf, who was among the pack, pressed a Dragonglass dagger into his chest, causing his eyes to turn blue, and turning him into the first of the White Walkers.

Before being doomed, the Night King is seemingly a normal man; in other words one of the First Men who were the original human inhabitants of Westeros and ruled the continent for thousands of years, before the Andals invaded from the eastern continent of Essos.

Now that we've established this, we can skip forward to present day. During the recent 'Inside the Episode' segment on Game of Thrones, showrunner David Benioff was discussing the scene where Jon Snow rides a dragon, and said something incredibly telling. Listen closely, guys.

"No one has ever ridden a dragon except for Dany. Only Targaryens can ride dragons and that should be a sign for Jon. Jon's not always the quickest with the uptake but he gets there," he said.

Only Targaryens can ride dragons.

Anyone else remember the infamous scene where the Night King swoops in riding Viserion? Does this mean the Night King was a Targaryen when he was human? A lot of people sure seem to think so!

But that's not it! Fans avidly watching the most recent episode also had a lot to say about the scene where poor Ned Umber meets a gruesome fate.

We see Ned nailed to a wall, surrounded by a mass of body parts, which are set alight by Deric when the young boy/zombie started to move. After being set on fire, the remains create a burning spiral which bear resemblance to another rather important symbol throughout the show: the sigil of House Targaryen.

Furthermore, this familiar symbol has been connected to the White Walkers several times before...

So, have we finally cracked it? Is there a battle between three Targaryen descendants on their dragons to come? God we hope so!

With one episode down and just five to go, we're closer than ever to seeing if the Night King on Game Of Thrones succeeds in his mission to kill everything in sight.

Seven seasons in, though, we still know very little about who he is and what he wants. Does he have a plan? Who is his main target? Who was he before he was the Supreme Leader of the Army of the Dead?

Well, the arrival of the first episode on Sunday may have just solved the last question for us! After 'Winterfell' aired, social media blew up with an intriguing theory that may expose the icy baddie's identity.

To understand it, we first need to back up to the episode where Bran (AKA: the Three-Eyed Raven) has a flashback that teaches him how the master of the White Walkers was created.

In case you don't recall, the Night King was captured by the Children of the Forest and Leaf, who was among the pack, pressed a Dragonglass dagger into his chest, causing his eyes to turn blue, and turning him into the first of the White Walkers.

Before being doomed, the Night King is seemingly a normal man; in other words one of the First Men who were the original human inhabitants of Westeros and ruled the continent for thousands of years, before the Andals invaded from the eastern continent of Essos.

Now that we've established this, we can skip forward to present day. During the recent 'Inside the Episode' segment on Game of Thrones, showrunner David Benioff was discussing the scene where Jon Snow rides a dragon, and said something incredibly telling. Listen closely, guys.

"No one has ever ridden a dragon except for Dany. Only Targaryens can ride dragons and that should be a sign for Jon. Jon's not always the quickest with the uptake but he gets there," he said.

Only Targaryens can ride dragons.

Anyone else remember the infamous scene where the Night King swoops in riding Viserion? Does this mean the Night King was a Targaryen when he was human? A lot of people sure seem to think so!

But that's not it! Fans avidly watching the most recent episode also had a lot to say about the scene where poor Ned Umber meets a gruesome fate.

We see Ned nailed to a wall, surrounded by a mass of body parts, which are set alight by Deric when the young boy/zombie started to move. After being set on fire, the remains create a burning spiral which bear resemblance to another rather important symbol throughout the show: the sigil of House Targaryen.

Furthermore, this familiar symbol has been connected to the White Walkers several times before...

So, have we finally cracked it? Is there a battle between three Targaryen descendants on their dragons to come? God we hope so!