TL; DR: Temos o caso da rainha da noite que é mencionado nos livros e aparece em um dos vídeos de histórias e histórias da série. Enquanto ela é mencionada como um Outro / Caminhante Branco, ela pode realmente ser uma criatura, pois nunca é declarada explicitamente, embora eu diga que as evidências apontam para ela como sendo um Outro / Caminhante Branco.

Também temos evidências de algumas espécies híbridas / humanas em potencial nos livros e no programa está implícito que Craster sacrificou algumas de suas esposas-filhas e dos filhos.

Game of Thrones

Há menção a "Rainha da Noite" na série, embora seja realmente de um dos vídeos de Histórias e Tradições, tanto quanto sei, nada é mencionado nos episódios principais.

We Free Folk have our stories, too. About how one of your king crows found something cold in the woods... with bright blue eyes. How he brought her home, through your wall, and declared himself "Night's King". For thirteen years he and his queen ruled over his brothers, making sacrifices as black as their cloaks. Lucky for you southerners, the Free Folk rallied to a King-Beyond-the-Wall, as we will when need be, and marched on the ancient castle he had taken as his own, the Nightfort. With the help of the Starks, we killed the demon and cleansed your precious watch. An' then they thanked us, an' kicked us back across the wall... as you always have.

_{Game of Thrones, Histories & Lore, "The Night's Watch" - Ygritte}

A partir disso tudo o que sabemos dela é que:

• ela estava com frio
• ela tinha olhos azuis brilhantes
• ela era a rainha do rei da noite
• ela foi morta pelo Free Folk e Starks

A partir disso, sabemos que ela obteve seu título de rainha do rei da noite, embora não haja evidências de que ela realmente tenha esse título. Pela descrição dela, pode-se dizer que ela era uma White Walker, mas não sabemos ao certo.

Aqui estão algumas capturas de tela do vídeo Histories & Lore:

_{^{O rei da noite encontra a "rainha da noite".}}

_{^{"A Rainha da Noite" volta para a Muralha.}}

_{^{"A rainha da noite" é feita rainha.}}

_{^{"A rainha da noite" é morta.}}

Também temos uma pista de que, no programa, algumas das esposas de Craster contraíram em escala de cinza e ele as levou para a floresta. Está fortemente implícito aqui que ele os está usando como sacrifícios aos Caminhantes Brancos, como ele faz com seus filhos bebês. Como tal, pode haver algumas mulheres brancas caminhantes disso.

GILLY: What do you call it in the South, what happened to your face?

SHIREEN: Greyscale. What do you call it north of the Wall?

GILLY: I don't know. But two of my sisters had it. They both died. How did they cure you?

SHIREEN: I don't remember. I was a baby. Lots of people came and tried, I think. Whatever they did, it went away. What happened to your sisters?

GILLY: My father made them move out of the keep into the huts outside. None of us were allowed to go near them. But we heard them. Especially at night. They started to sound... not like themselves.

SAM: Did you ever see them?

GILLY: Only once at the end. They were covered with it. Their faces, their arms. They acted like animals. My father had to drag them out to the woods on a rope.

SHIREEN: What did he do to them in the woods?

Gilly is afraid to answer. Selyse enters the room before she can.

_{Game of Thrones, Season 5 Episode 2, "The House of Black and White"}

Uma Canção de Gelo e Fogo

Nos livros, mencionamos a rainha da noite, que foi a queda do rei da noite como governada no Nightfort. Isto é apenas fortemente implicado que ela era um Outro, mas a partir do contexto da história que ela provavelmente era.

As the sun began to set the shadows of the towers lengthened and the wind blew harder, sending gusts of dry dead leaves rattling through the yards. The gathering gloom put Bran in mind of another of Old Nan's stories, the tale of Night's King. He had been the thirteenth man to lead the Night's Watch, she said; a warrior who knew no fear. "And that was the fault in him," she would add, "for all men must know fear." A woman was his downfall; a woman glimpsed from atop the Wall, with skin as white as the moon and eyes like blue stars. Fearing nothing, he chased her and caught her and loved her, though her skin was cold as ice, and when he gave his seed to her he gave his soul as well.

He brought her back to the Nightfort and proclaimed her a queen and himself her king, and with strange sorceries he bound his Sworn Brothers to his will. For thirteen years they had ruled, Night's King and his corpse queen, till finally the Stark of Winterfell and Joramun of the wildlings had joined to free the Watch from bondage. After his fall, when it was found he had been sacrificing to the Others, all records of Night's King had been destroyed, his very name forbidden.

_{A Storm of Swords, Bran IV}

Os próprios meistres não acreditam que ela era uma "rainha cadáver", mas provavelmente alguém de Barrowlands que fornece evidências do fato de que ela pode não ter sido outra. No entanto, vale a pena notar que os meistres parecem ter empurrado todo o sobrenatural para longe como histórias folclóricas e contos de fadas e, portanto, seu julgamento em casos como esse é nublado.

Yet over the thousands of years of its existence as the chief seat of the Watch, the Nightfort has accrued many legends of its own, some of which have been recounted in Archmaester Harmune's Watchers on the Wall. The oldest of these tales concern the legendary Night's King, the thirteenth Lord Commander of the Night's Watch, who was alleged to have bedded a sorceress pale as a corpse and declared himself a king. For thirteen years the Night's King and his "corpse queen" ruled together, before King of Winter, Brandon the Breaker, (in alliance, it is said, with the King-Beyond-the-Wall, Joramun) brought them down. Thereafter, he obliterated the Night's King's very name from memory.

In the Citadel, the archmaesters largely dismiss these tales—though some allow that there may have been a Lord Commander who attempted to carve out a kingdom for himself in the earliest days of the Watch. Some suggest that perhaps the corpse queen was a woman of the Barrowlands, a daughter of the Barrow King who was then a power in his own right, and oft associated with graves. The Night's King has been said to have been variously a Bolton, a Woodfoot, an Umber, a Flint, a Norrey, or even a Stark, depending on where the tale is told. Like all tales, it takes on the attributes that make it most appealing to those who tell it.

_{The World of Ice and Fire, The Wall and Beyond: The Night’s Watch}

Vale a pena notar que a Velha Nan declara que a mulher selvagem iria deitar com os Outros e uma espécie híbrida foi criada que poderia ter sido o que a Rainha da Noite era.

The man had been taken outside a small holdfast in the hills. Robb thought he was a wildling, his sword sworn to Mance Rayder, the King-beyond-the-Wall. It made Bran's skin prickle to think of it. He remembered the hearth tales Old Nan told them. The wildlings were cruel men, she said, slavers and slayers and thieves. They consorted with giants and ghouls, stole girl children in the dead of night, and drank blood from polished horns. And their women lay with the Others in the Long Night to sire terrible half-human children.

_{A Game of Thrones, Bran I}

Há um, chamado de Rainha da noite.

According to legend, a Lord Commander of the Night's Watch found in the Haunted Forest a cold woman with bright blue eyes, seemingly a female White Walker. He took her to the other side of the Wall and declared himself "Night's King". For thirteen years the two ruled over the brothers of the Night's Watch, performing human sacrifices. The Free Folk rallied under the banner of a King-Beyond-the-Wall, Joramun, and marched against the Nightfort, which the Night's King had taken as his seat, defeating him and his queen with the aid of House Stark.

Mas não conhecemos White Walker, uma mulher viva, e parece mais provável que Craster tenha sacrificado apenas meninos enquanto ele mantém as meninas por sexo.