144 Votes in Poll
My thoughts is 400 years old or older is my guess...
In the books, the Great Other is mentioned as a enemy to R'hllor, the god of light, by Melisandre. Followers of R'hllor believe that there are only two gods, R'hllor and the Great Other, who wage an eternal war over the fate of the world. All forces of darkness, cold, and death are believed to be only servants to the Great Other. Melisandre refers to the Others as the "cold children" of the Great Other. The Great Other has never been mentioned by any Westerosi although all know of the Others from legends. According to Melisandre, sleep is a little death, dreams are whisperings of the Other who would drag everyone into his eternal night.
But we see Bloodraven and Bran:There he sat, listening to the hoarse whispers of his teacher. 'Never fear the darkness, Bran.' The lord's words were accompanied by a faint rustling of wood and leaf, a slight twisting of his head. "The strongest trees are rooted in the dark places of the earth. Darkness will be your cloak, your shield, your mother's milk. Darkness will make you strong."
This ties the Last Greenseer, Brynden Rivers, the Old Gods, and Bran Stark to the theme of darkness that draws The Great Other into opposition with R'hllor. And Melisandre sees a vision in her flames: At the Wall, when gazing into the fires, Melisandre sees a wooden face, corpse white, a thousand red eyes, and a boy with a wolf's head beside him. She thinks to herself that they must be the Great Other's champions, as King Stannis is hers.
A wooden face, therefore a face of a weirwood, a symbol of the old gods, and the three-eyed raven, which are both closely related to Bran. A corspe white face, which Bran has in the books,or could be referring to the white wood of the weirwoods. A thousand eyes, which would be the eyes of the weirwoods, and in the Dunk and egg books, you will find:
'How many eyes does lord Bloodraven have? A thousand, and one.’
A boy with a wolf's head, which would be Bran，because his sigil is the direwolf. This could mean that either Bran, or Bloodraven could be the great other, if there was such a thing.
Also, Melisandre thinks that dreams are whisperings of the great other, so that it might be true.
Another theory is that the great other, as it is called, is not evil. Perhaps, Bran or Bloodraven will be the ones to kill Melisandre, because the red god in the books can easily be portrayed as evil, and as Jon describes it, "the hungry red flame."
It can be possible that the great other has nothing to do with the other, or the night king, because the great other is not heard from in westeros, where the others live,and it can just be a name, and for all we know, the great other has done nothing evil...yet.
I'm looking forward to Stannis and Melisandre vs Bloodraven and Bran.
I think that Dany will go (kind of ) crazy in the books, like she does in the show, but it'll be "helped" by some person, like Melisandre "helping" Stannis. For example, by the red priestess we saw for about one episode that disappeared right after. It (kind of ) makes sense, because Dany is somewhere in Essos (I think) , and the Red god is also worshiped in Essos, and in the show we see that the red priestess thinks that Dany is Azor Ahai, so she might make her burn people and stuff, like Melisandre did with Stannis. Also, Dany's family's words were “blood and fire”, and the priestesses both use blood magic(shown by Melisandre) and they burn people(so kindly shown by Melisandre again). And Dany happens to have three human eating, fire-breathing dragons.
Stannis: Dies fighting a war Melisandre said he'd win.
Melisandre: No shit fam! RIP my King. Valar Morghulis.
A few moments later....
Jon: Dies in a mutiny caused by his own stupidity.
Melisandre: Hold my Beer, I'm going to do some weird necrophiliac shit.
Jon: Comes alive.
I think once the Night King touched Bran he could see into the Night Kings future and just made sure everyone played their part to get himself to the throne 😭 Shiii we can even speculate that the visions the Red Woman was seeing was Bran. Making sure she got everyone in the right place 😭 just like Bran told Jon at the end.
Just a theory ... Arya stark has killed many, thanks to the faceless god (Jaqen H'ghar and to mention Syrio Forel). Melisande said that Arya would close brown, green and blue eyes.
Brown eyes can refer to those other victims such as Polliver and Ser Meryn Trant.
Blue eyes would obviously refer to the Night King and his army of dead. (After season 8 episode 3)
Green eyes can refer to Littlefinger as he is said to have Green-brown eyes... But as many predict, Arya may kill Cersei. But as Maggi the frog had once said Cersei will die in the hands of a valonqar... And Lannisters are said to have green eyes.
*So, I feel, either Jamie or Tyrion would kill Cersei and Arya would kill Jamie or Tyrion.*