Jon Snow is also a great choice. He has experience leading the Night's Watch and fighting against the White Walkers. In a fanfiction battle, he could lead a ragtag group of soldiers from different regions, united by a common cause, against a tyrannical lord who is oppressing the smallfolk. His leadership and combat skills would be crucial in the battle.
Arya Stark could be a main character. She could use her skills as a Faceless Man to infiltrate the enemy's camp before a big battle and gather intelligence. Her ability to change her appearance would give her an edge in spying and sabotage operations during the battle.
The Night King could be a central character in a sense. His actions and motives would drive much of the conflict. Bran Stark might also be a main character. His powers as the Three - Eyed Raven could be important in the battle. And don't forget Tyrion Lannister. His wits and strategic thinking could be vital in leading the defense against the enemy.
It could be Arya Stark as the bodyguard. Given her skills in combat and disguise, she would make a great protector. She could be protecting someone like Bran Stark as he continues to develop his powers and is a target because of his abilities.
The children of the original characters would be likely main characters. For example, Jon Snow's (if he has any) descendants. They could inherit his sense of honor and face new challenges in the post - war Westeros.
You could have a main character who is a commoner. Maybe a peasant girl who witnesses the fall of a great house and has to navigate the chaos that follows. She could get involved with the various factions vying for power, and through her eyes, we see the events of the prequel unfold. This would give a different perspective compared to the noble - centered stories we often see in the 'Game of Thrones' universe.
Gendry could also play a major role. As a skilled blacksmith and a bastard like Jon, he has the strength and the will to fight for change. He could use his skills to arm the revolutionaries and his knowledge of the common people's plight to inspire them to rise up against the unjust noble rule.
Jon Snow would also make a great main character. He could be on a mission to unite the different houses' spaceships against a common threat, like an alien race or a powerful space - faring pirate group. His leadership skills and sense of justice would be put to the test in this new setting.
Skitter from 'Worm' could be a main character. She has the ability to control bugs and her strategic mind would make her a force to be reckoned with in Westeros. Maybe she could start as a low - born character and rise through the ranks using her powers and wits, much like some of the more interesting characters in Game of Thrones.
Jon Snow could be a young journalist trying to uncover the truth about the corrupt power dynamics in the city. He's an idealist, much like in the original, and he's not afraid to take on the powerful families who control the media and politics.
Daenerys would be a great main character. She could be a strong - willed CEO of a start - up aiming to disrupt the traditional corporate world, just as she aimed to change the power dynamics in Westeros. Jon Snow could also be a main character, perhaps as a journalist uncovering the dark secrets of the powerful families, similar to his discovery of the White Walkers' threat in the show.
Well, Lord Eddard Stark could interact with Gared. Given that Eddard is a nobleman of the North, he might cross paths with Gared, perhaps when Gared was still in the North before joining the Night's Watch. They could have conversations about the state of the North, the rumors of strange things in the far North, which could be an interesting dynamic as Eddard is a man of honor and Gared is just an ordinary man with his own fears and hopes.