"Game of Thrones" fans have been theorizing about the Night King ever since he was first seen converting one of Craster's sons to a fully fledged White Walker in season 4's "Oathkeeper" episode. But it wasn't until the aftermath of the Hardhome massacre that fans realized what this vicious White Walker leader is truly capable of. And since he's finally breached the Wall at the end of season 7, it's only a matter of time before people of Westeros realize the full scope of his powers.

The Night King has been doing nothing but winning since he was first revealed and YouTube user Gray Area thinks that's because he is secretly someone else.

This theory may seem a bit unusual at first, but once you delve into all the details, it actually makes a lot of sense. Let's dive right in.

The White Walker leader in the 'A Song of Ice and Fire' books

In George R. R. Martin's "A Song of Ice and Fire" book series, on which "Game of Thrones" is based, Melisandre tells us about the Great Other, the god of darkness, cold, death, and most importantly the White Walkers.

The Night King is the closest thing we get to the White Walker god in the show. And as far as this theory is concerned, the Night King is, in fact, the Great Other. This makes perfect sense, especially when you take into account that the White Walkers are called the Others in the books and that the Night King has the power to resurrect the dead, a power that could be described as godly.

According to Gray Area, not only is the Night King the Great Other, but he is also the Lord of Light. Let's discuss.

The Lord of Light role

As seen in "Game of Thrones" season 6, the Children of the Forest plunged a piece of dragonglass into the heart of the man they tied to the weirwood tree, thus turning him into the fully fledged White Walker.

Dragonglass, also known as frozen fire or obsidian, is forged in the fires of the gods far below the earth, according to Maester Luwin. With that in mind, it makes sense to believe that dragonglass does, in fact, represent fire.

If we take into account that the White Walker leader was stabbed by dragonglass, then we should surmise that his heart is actually on fire, and the Lord of Light sigil is, quite literally, a heart on fire.

Take a look.

If the Night King really is the Lord of Light, that would certainly explain why every vision he's ever sent to his followers lead to death and destruction. Take what happened at "Game of Thrones" season 7 - The Lord of Light sends the vision of "the mountain shaped like an arrowhead" to the Hound, which ultimately led to the Night King acquiring a dragon and we all know how that turned out to mankind.

Check out Gray Area's video for more details.