9 Game Of Thrones Characters Who Could Defeat The Night King
4. Daenerys (And Drogon)
A Queen from the south vs a King from the far north. Fire vs Ice. Living dragon vs (un)dead dragon. There's a lot of symmetry and potential in a showdown between Daenerys and the Night King, with the former presented as one of the main heroes and the latter the overarching villain.
There's a lot to support the theory of Dany being Azor Ahai/The Prince That Was Promised, as she's ticked all the boxes so far, and Drogon could well represent her Lightbringer. If that hero is to return and save the world from darkness, then Dany is one of the absolute strongest bets.
Even putting those theories aside (although they do help her case), Daenerys is someone who potentially has the means to take the Night King down (two dragons are better than one), and is extremely invested in the fight against him after he killed one of her 'children'.