Well, perhaps Harry uses his magic skills like the Patronus charm to fend off the White Walkers approaching Winterfell. His ability to apparate could also be useful in quickly moving around the castle during the battle.
In addition to Harry and Jon Snow, Sansa Stark could be an important character. She is smart and politically savvy in Winterfell. She might be initially skeptical of Harry's magic but then see its value in protecting their home. And of course, Hermione could also be there. She could play a crucial role in strategizing with the Winterfell characters using her logical mind.
Perhaps Daenerys comes to Winterfell seeking refuge from the approaching White Walkers. The people of Winterfell are initially hesitant to welcome her, but as they see her determination to fight the common enemy, they start to accept her. Daenerys then discovers some ancient secrets in Winterfell's crypts that could potentially help in the battle against the undead. Her dragons also start to interact with the magical elements in the North in strange and unexpected ways.
Daenerys in Winterfell would disrupt the existing power dynamics in multiple ways. For one, her very presence as a Targaryen with a claim to the throne challenges the Stark's authority in the North. Her dragons are a huge factor; they could be used to intimidate or be seen as a great asset. This might lead to some characters trying to manipulate her for their own gain. For example, Littlefinger (if he were still alive) might try to play both sides, using Daenerys against the Starks or vice versa. Also, the common people in Winterfell would be divided in their opinions of her, some seeing her as a savior and others as a foreign invader.
Power and influence. If a character can assert their authority over Winterfell, whether through political maneuvering like Sansa did in the show, or by being a forceful military leader, she could be seen as the real lady. For example, if a character rallies the troops of Winterfell against invaders and is successful, that would give her a strong claim.
During the planning and design of the Ice and Snow World, the classic scenes of Winterfell in the TV series Game of Thrones were incorporated. According to the response from the Martyr Cultural Travel Investment Group, they integrated the Winterfell scene with the Snow World Park without copyright. This year's Ice and Snow World had a total area of 81.66 hectares, making it the largest Ice and Snow World in the history of the city. The move was intended to bring tourists a more colorful ice and snow experience. In the past few years, the Ice and Snow World in Haerbin had successfully created themed areas such as Frozen and Journey to the West. Therefore, it incorporated the Winterfell elements of Game of Thrones, making people look forward to the Ice and Snow World this year.
Well, a 'bastard of Winterfell fanfic' could be about the story of a character who is a bastard in Winterfell. It might explore their struggles, their relationships within the Winterfell society, and how they try to find their place. Maybe it focuses on their journey of self - discovery, facing the prejudice that bastards often face in the world of Westeros. It could also involve their adventures, like getting involved in battles or political intrigues within the context of Winterfell.
In many 'Game of Thrones' fanfics, different characters could be considered the 'real' lady of Winterfell. It could be Sansa Stark, as she has a strong claim to Winterfell through her Stark heritage. She has endured a great deal and learned the ways of politics, which would make her a worthy lady of the keep.
Family is a very common theme. Since the Starks are a large and important family in Winterfell, many fanfics explore their family bonds, loyalty, and rivalries. Another common theme is survival, especially during the harsh winters that Winterfell often faces.