After killing the Mountain, Jon Snow could face consequences. There might be those who seek revenge for the Mountain's death. Or, it could lead to a series of events that test Jon's leadership skills. He may have to deal with the fallout among different factions, like the Lannisters or other powerful houses. His actions could also attract the attention of other dark forces in the fanfiction world, forcing him to prepare for new threats.
In fanfiction, Jon Snow killing the Mountain could be a very interesting plot twist. It might show Jon's growth and his ability to take on powerful adversaries. Maybe it's set in an alternate scenario where their paths cross in a more direct combat situation.
Well, in some fanfictions, Jon Snow might use his superior sword - fighting skills. He could have a one - on - one duel with Ramsay Bolton and defeat him with his Valyrian steel sword. His determination and the element of surprise could also play a role.
In some fanfictions, Jon Snow could gain control over a dragon. Given his special connection to the supernatural, it's not entirely far - fetched. This would make him an extremely powerful player in the Dance of Dragons, able to tip the balance of power in any direction he chooses.
Jon Snow could use the castle as a base to improve relations with the other kingdoms. He might hold diplomatic meetings there, inviting lords and ladies from all over Westeros. This would be a big change from his more battle - focused past.
Jon Snow could discover that the dragon has some sort of special connection to his true heritage. Maybe it was left there by his Targaryen ancestors. The dragon could help him uncover secrets about his family and his place in the world. He may also face challenges in controlling the dragon at first, but with time, he masters it and uses it to change the fate of Westeros.
In a 'Jon Snow and Daenerys meet' fanfiction, they might initially be suspicious of each other. Jon, being the honorable man he is, could be cautious about Daenerys' claim to the throne. Daenerys, on the other hand, might see Jon as a potential threat or an ally she can use. They could start by exchanging stories of their respective journeys, with Jon talking about the Night King and the threat from the North, and Daenerys sharing her experiences in Essos. Eventually, they might form an alliance to fight their common enemies, and who knows, perhaps there could be a romantic connection between them as well.
In the fanfiction world, Jon Snow meets Drogon and there could be an instant connection. Since Jon is a Targaryen (in the show's revelation), Drogon might sense a kinship. They could form an alliance. Jon could use Drogon to gain an upper hand in battles or to travel quickly across Westeros. It would be an amazing sight to see Jon Snow on the back of Drogon, flying over the kingdoms.
In a lemon fanfiction, there could be a lot of emotional and physical chemistry between them. Jon's rough exterior from his time in the Night's Watch and Margaery's soft yet strong - willed nature could create a really intense relationship. They might share secrets and dreams that no one else knows, and this new - found closeness could be the start of a journey that changes the fate of Westeros.
In a 'Jon Snow sits on the Iron Throne' fanfiction, Jon might start by reforming the way the throne is perceived. Instead of it being a symbol of power and fear, he could make it a symbol of unity. He would have to make tough decisions regarding the remaining White Walkers threats, if any. Also, his relationships with other characters like Daenerys' followers would be very interesting to explore as he tries to bring stability to the Seven Kingdoms.
Well, in this fanfiction, it's possible that the dragon egg has some special connection to Jon Snow's true parentage. It could be a sign of his Targaryen heritage, if we follow the theories. He could then use the dragon that hatches from the egg to fight against the White Walkers, as dragons are very powerful creatures in the 'Game of Thrones' universe.