A unique idea could be Smaug being tamed by Bran using his warging abilities. Bran, with his connection to animals and his growing powers, might be able to reach out to Smaug's mind and form a bond. This would completely change the role Smaug plays in the 'Game of Thrones' universe.
Smaug could potentially be a part of the magical elements in the 'Game of Thrones' fanfiction. He could be connected to the old magic that once existed in Westeros. Maybe his presence awakens other dormant magical forces. His actions could also influence the political landscape. For example, if he attacks a certain region, the lords there would have to divert their resources from the power struggles to deal with the dragon threat, which in turn could give an advantage to other houses.
One interesting SMAUG 'Game of Thrones' fanfiction could be one where Smaug somehow ends up in Westeros. He might be drawn by the rumors of the vast treasures held by the various lords. Another could be a story where he forms an alliance with one of the powerful houses, like the Lannisters, who are known for their love of gold.
One interesting 'Game of Thrones Smaug fanfiction' could be one where Smaug somehow finds his way to Westeros. Maybe he is drawn by the power struggles and the vast treasures held by the various houses. He could interact with characters like Tyrion, who is known for his intelligence and might see a way to use Smaug to his advantage in the game of thrones.
Smaug would probably see most of the Game of Thrones characters as either insignificant or as potential thieves of his treasure. He might interact with the more powerful ones, like Daenerys, with hostility as she also has dragons. He would likely view her as a rival for dominance in the skies.
Smaug could be a terrifying and powerful antagonist. He could be lured to Westeros by the smell of gold and riches in the various kingdoms. His ability to fly and breathe fire would make him a formidable foe against any army or dragonriders in the Game of Thrones universe.
There might be a fan fiction where Smaug forms an alliance with a powerful house in 'Game of Thrones'. For example, he teams up with House Lannister. The Lannisters could use Smaug's power to defeat their enemies, while Smaug gets a share of the wealth and territory. This would create a whole new dynamic in the power struggle of Westeros.
In a Game of Thrones fanfic, Smaug's lair could be in the mountains, similar to where he was in Middle - earth. It might be a vast network of caves filled with his hoard of gold, jewels, and other treasures. The caves could be filled with the bones of those who tried to steal from him, creating a spooky and dangerous atmosphere.
If Smaug were in Game of Thrones fanfic, he could change the story in many ways. For one, his fire - breathing ability would make him a formidable force in battles. He could easily destroy entire armies or burn down cities like King's Landing. Also, his hoard of treasure would attract many greedy characters in the GoT universe, leading to new power struggles and alliances. Maybe some would try to tame him, while others would simply want to steal his gold.
Tyrion Lannister could also be paired with Smaug. Tyrion is known for his wits and strategic thinking. In a fan fiction, he might try to outwit Smaug, perhaps making a deal with the dragon to save his own skin or gain an advantage in the political turmoil of Westeros.