The 3 ways to kill a White Walker on 'Game of Thrones'

Warning: There are spoilers ahead for "Game of Thrones."

Most characters on "Game of Thrones" right now are either worried about staking a claim to the throne, getting revenge on a rival house, or fighting off the Faith Militant. In reality, the biggest threat on the show everyone should be worried about are the White Walkers. As seen in season five, these inhuman beings are the real danger mankind should be uniting against.  The only problem is that those who see the great war coming have no idea how they'll manage to stop their armies.

So far in the television show, characters have only managed to kill White Walkers in two ways — using dragonglass or Valyrian steel. But that's not likely the only way to kill the magical beasts. With a war against the White Walkers on the horizon, here’s a look at the three ways characters could take them down. 

Dragonglass

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In season two, Sam Tarly killed a White Walker with a dragonglass dagger. He found a cache of these weapons at the Fist of the First Men, an ancient stronghold north of the Wall. Sam believes that the earliest men who lived in Westeros hid them there, as a backup stash to use against White Walkers.

Dragonglass is simply another name for obsidian — volcanic glass of sorts. Aside from the set of daggers Sam found, we know there is a lot of dragonglass in southern Westeros. Dragonstone, Stannis Baratheon's castle, sits on top of several large deposits of dragonglass. 

In season five, Jon Snow lost most of the dragonglass Sam had collected. He brought a bag of daggers to Hardhome, and when the White Walkers attacked they were left behind in a hut. Jon and Sam might want to commission someone to hack into Dragonstone's deposits soon. 

Valyrian Steel

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Speaking of "Hardhome," Jon learned in that same episode that there's more to his sword than he thought. Longclaw, the sword gifted to him by former Lord Commander Mormont, is made from Valyrian steel. This special type of metal is rare in Westeros because it can only be forged using magic.

The name is derived from Valyria — the ancient stronghold for a now-dead civilization in Essos. Valyrian steel was forged in Valyria using dragonfire. After the Doom struck Valyria, decimating the population and culture, and after dragons went temporarily extinct, there was no way for people to craft new Valyrian steel.

The connection between dragonglass and Valyrian steel is (you guessed it) dragons. Which brings us into the realm of hypotheticals. 

Can dragons kill White Walkers? 

Skye Gould/Tech Insider

We haven't seen this theory tested on the show, but it makes sense to think dragon fire could kill a White Walker. Regular fire is the only known way of killing wights (the resurrected dead people White Walkers can create). And since dragon fire is a required ingredient in Valyrian steel, and dragonglass literally has the word "dragon" in it, we believe a blast of flames from a dragon's mouth can do the same amount of damage. 

Fans will have to wait and see if Daenerys Targaryen and her dragons ever make it to Westeros in time to come across the White Walkers. If our theory is correct, the White Walkers wouldn't stand a chance against her beasts.